The National Tax Accountants Professional Association (TAPA) Has Recommended That

The National Tax Accountants Professional Association (TAPA) has recommended that its members charge a minimum of $25 per hour for completing tax forms. This recommendation is probably:

A) a per se price fixing violation of the Sherman Act.
B) not a violation of the Sherman Act, because it has been made by a professional association.
C) not a violation of the Sherman Act, because a fee is different from a price.
D) subject to the rule of reason.