While waiting in line to buy two tacos at 80 cents each and a medium drink for 90 cents, Jordan notices that the restaurant has a value meal containing three tacos and a medium drink all for $3. Jordan should purchase the value meal if 

A. his marginal cost exceeds his marginal benefit.
B. his marginal benefit of the third taco is greater than 50 cents.
C. his value of the third taco is less than 50 cents.
D. he has $3 in his wallet.

Answer: B