6. (4 points) Given below are three different graphs. One of the graphs is f(x), one is f '(x) , and the other f "(x). Determine which graph is which. Circle the correct answer. A. B. C. -76 543 (a) A. isf(x), Bisf'(x), Cisf"(x) (b) A. isf(x), Cisf'(x), Bisf"(x) (c) A. isf'(x), Cisf(x), Bisf"(x) (d) A. isf'(x), Cisf"(x), Bisf(x) (e) A. isf"(x), Cisf'(x), Bisf(x) (f) A. isf"(x), Cisf(x), Bisf'(x)