Given 1 3 5 7 . . . (2n 1) = n^2 What must we show first? A. The statement is true for n = 1: (2)(1) 1 = 1^2 B. The statement is true for n = k: 1 3 5 7 . . . (2k 1) = k^2 C. The statement is true for n = k 1: 1 3 5 7 . . . (2k 1) (2k 1) = (k 1)^2 D. None of the aboveLet P(n) = 2n 1. Evaluate: a) P(k) b) P(k + 1) A. a) P(k) = 2k 1 b) P(k + 1) = 2n + 1 B. a) P(k) = 2k + 1 b) P(k + 1) = 2(k + 1) - 1 C. a) P(k) = 2k 1 b) P(k + 1) = 2k + 1 D. None of the above