(06.07) Given the function f(x) = x3 + x2 − 2x + 1, what is the resulting function when f(x) is shifted to the left 1 unit? (2 points) a f(x − 1) = x3 − 2x2 − x + 3 b f(x + 1) = x3 + 4x2 + 3x + 1 c f(x) − 1 = x3 + x2 − 2x d f(x) + 1 = x3 + x2 − 2x + 2