Wendy has a monopoly in the retailing of motor homes.She can sell five per week at $21,000 each.If she wants to sell six,she can charge only $20,000 each.The quantity effect of selling the sixth motor home is:

A) $20,000.
B) $10,000.
C) $15,000.
D) $21,000.

Quantity Effect

The impact on total revenue or expenditure when the quantity sold of a good or service changes, holding its price constant.

Motor Homes

Recreational vehicles equipped with living quarters and amenities found in a home, used for traveling or camping.

Retailing

Retailing refers to the selling of goods and services directly to consumers for personal, non-business use.