Frisco Agrees to Lease an Apart?ment from Gina for One

Multiple Choice

Frisco agrees to lease an apart?ment from Gina for one day to see Harry,the president of the United States,deliver a speech in the street below.The speech is can?celed ten days before its scheduled date.The con?tract

A) is discharged.
B) is not affected.
C) is postponed until another event is scheduled.
D) must be performed immediately.