What Is the Major Difference Between Independent Regulatory Agencies and Independent

What is the major difference between independent regulatory agencies and independent executive agencies?

A) Independent executive agencies only report to Congress.
B) Independent executive agencies are directly controlled by the judicial branch of the federal government.
C) Independent executive agencies are more likely to be included as part of the iron triangle.
D) Independent executive agencies combine some function of all three branches of government.
E) Independent executive agencies are subject to the authority of the president to a greater degree.