Which correctly identifies the values of a, h and k for the function f(x) = -2(x + 3)² + 1?

A. a = 2, h = 3, k = 1

B. a = 2, h = -3, k= -1

C. a = -2, h = -3, k = 1

D. a = -2, h= -3, k = -1​