Exercise 15.3.18 Suppose that the CB is continuously callable once it becomes callable, meaning that it is callable at any instant after a certain time t∗. Argue that the C(V, t) > P(t) case needs to be considered only at t = t∗ and not thenceforth for the call provision. (HenceW(V, t−) = min(W(V −mc, t+)+c, P(t)) on any coupon date t > t∗.)