Select all of the answers that aretrue. That is, there may be more than one correct statement.

Which of the following can result in deadweight losses?

a) When a monopolist sets the market price

b) When the market demand curve shiftsin a perfectly competitive market

c) When there is an asymmetryin the information held by buyers and sellers

d) When marginal cost curve shifts in a perfectly competitive market

e) When a non-binding price ceiling is implemented