1. Activity A has the following marginal benefit (MB) and marginal cost (MC) functions: MB = 10-0.05A and MC = 2 + 0.05A e. Compute the net benefit for one unit more and one unit less than the level of activity found to be optimal in part c (i.e., compute NB for A* + 1 and A' - 1). Are your results consistent with the definition of "optimal"? Explain