4. Wilderness conservation (a) Suppose society obtains value v W from a wilderness region in proportion to its area, W , where v > 0 is some constant. If society discounts utility in future periods by a factor of = 1/(1 + ), what is the net-present discounted value of conserving this wilderness region from t = 1 to t = ? (b) Suppose that it is possible to obtain p units of profits today by converting 1 unit of wilderness land permanently into development. For what values of should we ban all such land development?