5.Consider an individual who lives for two periods, working in the last period of life (n2) and consuming in the first (c1). The individual can consume in period one by borrowing at the market rate R. The production function and utility function of the individual are given as y2 = kn2 and U(c1, n2) = log(c1) - n2. What is the optimal value of n2?
(A) 1
(B) (1+R)/k
(C) 0
(D) 1/k
(E) k/(l+R)