Humanities & Social Sciences

dear Aditya ,
it looks you are little bit confused . see first you should understand that what you want to do , in which you are interested don't look others what they are doing . if you wana become a C.A ,c.s ,banking go for commerce . . . if a civil exam, etc go for arts. . . . so on.
these three are like east - west and north . so choose the one where you wish to go.although various courses like management , designing , hospitality etc doses not need any type of subjective graduation.

yes you can but you will find it a bit difficult to handle both of them together.

It depends upon the area in which you can spread your work. If the work is confined to some area only then you may have difficulty.

I say Telugu is very widely chosen. English is difficult, because preparation for it will be difficult, in view of the range of the subject.