These statements are correct, false (there is counter example) or nonsense (doesn't make sense)

Answer with T for correct F for false and Nonsense

(a) (5 points) We have MG) (3)] =Span[('i): (3)} (b) (5 points) If A2 = 0, then Im(A) is a subspace of ker(A). (c) (5 points) If A is an m x n matrix, then null(AT) = null(A)