In What Way Are Professionals Similar to One Another

In what way are professionals similar to one another?

A) Both are considered employees of their clients who are,in turn,vicariously liable for their negligence.
B) They have ethical obligations that other employees and service providers
Do not have and are usually members of professional governing bodies.
C) They are governed by employment law and are usually regulated by federal bodies that establish rules of conduct and codes of ethics.
D) Both submit bills to an independent panel for review.