John has 6 friends who want to ride in his new car that can accommodate only 4 people at a time (John plus 3 passengers). How many different combinations of 3 passengers can be formed from John's 6 friends?	Select:
A) 3  B) 8  C) 10  D) 15  E) 20
6C3 = 20   The answer is 20.
<result>E</result>
John has 6 friends who want to ride in his new car that can accommodate only 4 people at a time (John plus 3 passengers). How many different combinations of 3 passengers can be formed from John's 6 friends?