The correct option to the given question is option āCā. If a bill has been passed by both the House and the Senate and then sent to the President at the beginning of the annual session of Congress and the President sits over it for 10 days without signing then the bill becomes a law automatically. If the Congress gets adjourned for any reason before the 10 days, then the bill is not passed but it stands as vetoed. This is a complicated case depending on the situation.