Monopolistic competition is not considered to be efficient because, among others _ a) At profit maximizing output level

[answerhappygod]

Monopolistic competition is not considered to be efficient
because, among others _
a) At profit maximizing output level excess capacity of
production remains; and, also, it is not producing at the minimum
ATC in LR
b) excess capacity remains at profit maximizing output
c) profit maximizing output is not at the minimum ATC even in
the LR
d) Some forms of collusion