Correct option is A
The term Monopsony defines A form of market with many sellers but only one buyer, who is in a position to dictate terms to the sellers.
Monopoly is a form of market with one seller but many buyers and buyer have no choice.
*Perfect competition is form of market where there are many sellers and many buyers and both have multiple choice.
*Duopoly It is a market in which there are two sellers and many buyers having limited choices.