A reading list for a certain course consists of 10 books, of which 4 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) 115 C) 130 D) 144 E) 195
Case 1 PPNN 2 Poems out of 4 and 2 Novels out of 6 i.e. 4C2 * 6C2 = 90   or   Case 2 PPPN 3 Poems out of 4 and 1 Novels out of 6 i.e 4C3 * 6C1 = 24   or   Case 3 PPPP 4 Poems out of 4 i.e. 4C4 =1   Total no. of selections case 1 + case 2+ case 3 = 90 + 24 +1= 
<gadget id="calculator">90 + 24 +1</gadget>
<output>115</output>
115   So answer must be B. 115   ANSWER:115
<result>B</result>
A reading list for a certain course consists of 10 books, of which 4 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?