What Are the Four Equal Pay Tests Associated with the Equal

What are the four equal pay tests associated with the Equal Pay Act of 1963?

A) Equal danger on the job, equal intelligence for hire, equal responsibility, and identical working conditions
B) Equal skill, equal effort, equal responsibility, and similar working conditions
C) Equal job requirements, same working conditions, equal job duties, and equal responsibilities
D) Equal effort, equal working conditions, identical job duties, and equal job requirements