The function f(x) is shown below.
f(x) = (3)x - 2

The function f(x) is shifted to the left by 13 units. Which of the following best represents the new function?

(A) f(x) = (3)^x + 11

(B) f(x) = (3)^x + 13

(C) f(x) = (3)^x -15

(D) f(x) = (3)^x - 13