Suppose that on the interval I, f(x) is positive and concave up. Furthermore, assume that f" (a) exists and let g(x) = (f(x)). Use this information to answer the following questions. To answer the questions, choose your answers from the following list: CU (concave up), CD (concave down), f(x), f(x), f'(x), 0, or 1. a.) f" (x) > on I. = 0 and B = 0 b.) g" (x) = 2(A + B f" (x)), where A = c.) g'(x) > on I. d.) g(x) is on I. Note: You can earn partial credit on this problem.