A reading list for a certain course consists of 10 books, of which 6 are poems and the rest are novels. Each student is required to read a selection of 4 books from the list, including at most 2 novels. How many selections of 4 books satisfy the requirements?
Choices:  A) 90  B) 125  C) 130  D) 144  E) 195
Ans: 125   Solution: Selection requires at most 2 novels, means=   0N4P + 1N3P + 2N2P   4c0*6c4+ 4c1*6c3 + 4c2*6c2   = 15+ 20 + 90= 
<gadget id="calculator">15+ 20 + 90</gadget>
<output>125</output>
125   Ans: 125
<result>B</result>
A reading list for a certain course consists of 10 books, of which 6 are poems and the rest are novels. Each student is required to read a selection of 4 books from the list, including at most 2 novels. How many selections of 4 books satisfy the requirements?