2. Ben is trying to decide when he should cut his trees (type A). The market value of the lumber that he will get if he let his trees reach the age of t years is given by the function V(t) e2t_ose He can earn an interest rate of 5% per year on money in the bank. (a) At what age do the trees have the greatest market value? (b) If he is only interested in the trees as an investment, when should he cut and sell his trees? c) Suppose he has another type of trees (type B). The market value of these trees changes with time according to W(t) e^vi. If he is only interested in the trees as an investment, should he cut the type A trees and the type B trees at the same time