Suppose a Farmer Earns a Larger Profit Than the "Normal

Suppose a farmer earns a larger profit than the "normal profit" by producing a special type of milk that becomes popular

A) the farm's owners are likely to withdraw from the industry in order to retire early.
B) other farmers are likely to produce the same milk, pushing up the prevailing market price.
C) other farmers are likely to produce the same milk, pushing down the prevailing market price.
D) the firm will continue to earn its "normal profits" far into the future.