Study the given information carefully to answer the given questions.
Six books A,B, C, D, E and F, each of different thickness, are kept on a table. C is thicker than A, but thinner than E. A is thicker than both B and D. E is not the thickest. The third thinnest book is 9 cm thick and the thickest book is 16 cm thick. (Note the thickness of all the books are in whole numbers.)
For the following questions answer them individually