There are 8 books in a shelf that consist of 1 paperback books and 7 hardback books. If 3 books are selected at random without replacement, how many different combinations are there that at least one paperback book is selected? Choose the correct choice:
A) 21	B) 45	C) 50	D) 55	E) 60
8C3 [Select any four] - 7C3 [Select all hard backs] = 21   21
<result>A</result>
There are 8 books in a shelf that consist of 1 paperback books and 7 hardback books. If 3 books are selected at random without replacement, how many different combinations are there that at least one paperback book is selected?