Which statement best describes the constitutional amendment process? A. It is a unique process in which the public proposes an amendment and votes on it in a special election before sending it to the Supreme Court, which can ratify it if five of the nine judges agree that it is constitutional.

B. It is an intentionally difficult process in which an amendment must be proposed and approved by two-thirds of Congress or two-thirds of the state legislatures before being ratified by three-fourths of the states.

C. It is a secretive process in which an amendment is proposed by secret ballot before being approved or vetoed by the president, who then lobbies Congress to ratify it.

D. It is a simple process in which an amendment must be introduced and approved by a simple majority in Congress and at least half of the states.