Which of the Following Best Describes the Duties of State

Which of the following best describes the duties of state insurance regulators with regard to insurance rates?

A) to prevent the use of rates that discriminate among different insured groups,
B) to prevent the use of rates that discriminate unfairly among different insured groups,
C) to mandate rates to be used by insurers,
D) to see that insurers charge enough to make a satisfactory profit,
E) to convince the public that insurance rates are not excessive.