41. Correct. The answer is true. The present value of the value of wine is At = Ve-rt
= Kexp(t0.5 -
rt). To determine the optimal time for
selling the wine optimize the present value function: At' = (0.5t-0.5-r)Kexp(t0.5 -
rt) = (0.5t-0.5-r)* A(t)= 0.
Since A(t)¹0,
(0.5t-0.5-r)= 0 and t* = (4r2)-1. Check that A"(t) < 0 for a maximum.