Ahhh... Still cant made up my mind..

Ah you can see that admission to IPTA phase II just opened yesterday and i had to fill it up but till now i still dunno which course i wanted to take.
I wanted to be a doctor but still dunno which course should i take...
Here's the list..

UiTM = Diploma sains,asasi sains ( whats the difference? )
UIA = asasi perubatan.asasi sains hayat,asasi sains kesihatan bersekutu (still dunno whats the difference between them and is ARABIC is compulsory ?)
UM = sains hayat...

is there any iptas that i missed out from the list? really need some help here about my future!!
help to me pick....
thanx..
;)