Within the Framework of Competitive Labour Markets, What Is the Expected

Within the framework of competitive labour markets, what is the expected effect of the minimum wage?

A) to make the workers who are retained less productive than what would otherwise be the case
B) to reduce employment below the level that would otherwise exist
C) to make the workers better off
D) to cause a shortage of workers at the going transactions wage
E) to shift the demand for low-skilled workers to the left (a fall)