What Does the Elastic Clause Entail

What does the elastic clause entail?

A) Over time, the distance between Congress and the president increases and decreases.
B) When necessary, the Supreme Court can become more activist.
C) The powers given to the president can be expanded through the authority to make laws in the national interest.
D) Congressional powers can be expanded without limit.
E) Congressional powers can be expanded through the authority to make laws in the national interest.