Answer:
Option (B) is correct.
Step-by-step explanation:
Number of consumers in the market is one of the determinants of demand which shifts the demand curve.
In a perfectly competitive market, if there is an increase in the number of consumers in the market then as a result the demand for the product also increases which shifts the demand curve rightwards.
This rightward shift in the demand curve will result in an increase in both equilibrium price and equilibrium quantity which is also a profit maximizing quantity of output.