The function a(b) relates the area of a trapezoid with a given height of 10 and one base length of 7 with the length of its other base. It takes as input the other base value, and returns as output the area of the trapezoid. b+7 alb) = 10. 2 Which equation below represents the inverse function b(a), which takes the trapezoid's area as input and returns as output the length of the other base? O A. b(a) = 9-5 6 O B. b(a) = a5+5 O C. (a)- +7 D. b(a) =​