How Have Presidents and Congress Acted Differently with Respect to Their

How have presidents and Congress acted differently with respect to their constitutional authority to execute the law?

A) Congress has rarely delegated its functions to the executive branch, and presidents have rarely relinquished their powers to Congress.
B) Presidents have passively allowed Congress to encroach on their powers, while Congress has steadfastly resisted encroachment by presidents.
C) Presidents have never delegated their authority to another branch, but Congress has often freely handed over powers to the president.
D) Members of Congress have frequently delegated authority to the executive branch, and presidents have consistently shared their powers with Congress.