Consider the total surplus (the sum of consumer and producer surplus) under the assumption that all firms are identical and produce an identical good. They have no fixed costs and constant marginal cost. Demand takes the form Q=100-5P: (i) Perfect Competition (ii) Bertrand competition (iii) Cournot competition (iv) Monopoly with a single price (v) Perfect price discrimination

Group of answer choices

a. The total surplus is always different in each of these market configurations

b. The total surplus is always the same in two of these five configurations

c. The total surplus is always the same in three of these five configurations

d. The total surplus is always the same in four of these five configurations

e. The total surplus is always the same all five of these configurations