A buyer is willing to pay $200 for a commodity. Incumbent has a cost of $100. Potenttial entrant with cost v uniformly distributed between 0 and $200. Contract between buyer and seller written in first period but covers 2nd period. Entrant decides whether or not to enter in 2nd period. Bertrand competition post entry. Without a contract? entry will occur only if entrants cost is lower than

A 100

B. 150

C. 225

D. 250

E. 300