Question 6 When using a direct proof to establish the validity of the following theorem: If n is even, then (n + 1)2 is odd (where n is an integer) we start by: assuming that n = 2k where k is an integer. assuming that n = 2k + ] where k is an integer. o assuming that in + 1)2 is even. o assuming that (n + 1)2 is odd. A Moving to another question will save this response