could you help me ture or false and give me the reason why >????

1. [5 points] (TRUE/FALSE) For each of the following questions, determine whether it is true or false. You do not need to justify your answers. Each question is worth 1 point. a) A function f : A > B is Onetoone if for any 11:, y E A, f (at) 75 f (3;) implies :5 75 y. b) A function f : A > B is onto if for any :c E B, there exists 3; E A such that w = f (y). C) (16))" (12) + (1f)+ (i?) + (18) + (i3) = 512- d) There are exactly 36 ways to choose 2 peeple from a group of 6. e) There are exactly 120 ways in which 5 peeple can form a line