Suppose There Are No Barriers to Competing for Real Rents

Suppose there are no barriers to competing for real rents. It follows that if real rents exist, people will compete for them

A) and in the process produce less of the good or service that is connected with the real rents.
B) and in the process produce more of the good or service that is connected with the real rents.
C) only if the real rents can be turned into artificial rents and therefore maintained over a long period of time.
D) only if the real rents are pure economic rents and not simply economic rents.
E) There is not enough information to answer the question.