Answer these questions based on the following informations
After completing his MBA, Zafar shifted to a new flat where he bought a new bookself and a set of 7 novels. The names of these novels, In the chronoligical order, are A,B,C,D,E, F and G
He wants to keep the novels in his bookshelf such that the last two novels of the series are never kept together, find the number of ways in which he can arrange all the novels

Options

A. 7
B. 11
C. 15
D. 18

Answer

B