How does a presidential veto affect a bill passed by Congress?

It passes a bill approved by Congress and becomes law as soon as the Supreme Court rules it to be constitutional.

It changes a bill passed by Congress to suit the president, who will send it back to Congress to pass or reject with a simple majority vote.

It delays a bill passed by Congress from becoming law for one full year, after which the president must sign the bill into law.

It kills a bill passed by Congress unless Congress votes to override the veto with a two-thirds majority in each house.