What Is the Most Common Method Used to Amend the U.S

What is the most common method used to amend the U.S. Constitution?

A) A two-thirds vote in both chambers of Congress
B) Simple majority of the voters of the United States
C) Approval from two-thirds of the state legislatures and the signature of the president
D) Voter approval and the ruling of the Supreme Court on its constitutionality
E) Two-thirds of both chambers of Congress or two-thirds of state legislatures, then ratified by three-fourths of state legislatures