Given a polynomial function f(x) = –x² + 2x + 1 and an exponential function g(x) = 2x, what key features do f(x) and g(x) have in common?
A. Both f(x) and g(x) decrease over the interval of [1 , [infinity]).
B. Both f(x) and g(x) have the same range of (–[infinity], 2).
C. Both f(x) and g(x) have the same x-intercept of (–1, 0).
D. Both f(x) and g(x) have the same y-intercept of (0, 1).
