Sales & Marketing

It is simple.
Step 1 - Know if you like numbers and lot of calculation and formula if number of Finance is out of your bucket.
Step 2 - Are you interested in earning money? You can't sit at one place you need to or like to interact with professionals every day, you are ready for a rigorous work, choose Marketing.
Step 3 - Do you like a stagnant life, fixed income interact with new people fresher etc. go with HR.
In simple words, when marketing is compared with Finance and HR, there is more growth in your life, but be ready for some field work ( not selling door to door ).
I assume you already know the difference between Marketing and Sales.
Marketing will fetch you more money and experience as a fresher, by the end of BBA you will be able to decide what will be your cup of tea in MBA. For me personally HR and Finance sounds very executive but at some time these things will get boring, choose wisely.

According to Great Lakes Institute of Management, there is no fixed cutoff. However, securing 90+ percentile would be a safe indicator. Along with the percentile or score, Great Lakes Institute of Management considers the candidate profile, so an all-round profile with good academic background, extra-curricular activities or a couple of years' of work experience are key factors to get admission in this institute. Entrance exams accepted by the college are CMAT & CAT. Placement record as per college alumni is above average. With better merit, most students gets placed. Total Fee is INR 7.80 Lacs for the course (Fees Components: Tuition)
Hope it helps.

Yes, you are eligible to apply for UGC NET management exam. The UGC NET Exam is held twice a year for the selection of candidates for assistant professor posts in the university, for a junior research fellowship and to pursue Ph.D. For complete details, I have found this blog https://www.eduncle.com/cbse-ugc-net-exam where you can find all the useful information regarding the NET Exam. The eligibility to appear for the NET exam is as follows:
Educational: The candidates must have post-graduation degree from recognized university with more than 5% marks, Age: There is no age limit for NET Lectureship but you must have below 30 years for NET JRF. As you have completed PGDM in marketing, you can apply for UGC NET Economics and other related subjects only. For more details, visit the official website. Hope it will help you. All the best.