You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Question: On dividing 21 by a number, the quotient is 10 and the remainder is 1. Find the divisor.

 Option A: 1

 Option B: 2

 Option C: 4

 Option D: 6

 Option E: 7
Option B

Question: When p is divided by 9, the remainder is 7. All of the following are possible values of p, except for which of the following?

 Option A: 16

 Option B: 34

 Option C: 52

 Option D: 60

 Option E: 70
Option D

Question: A cheese factory sells its cheese in rectangular blocks. A normal block has a volume of 8 cubic feet. If a small block has half the width, half the depth, and half the length of a normal block, what is the volume of cheese in a small block in cubic feet?

 Option A: 1

 Option B: 5

 Option C: 4

 Option D: 6

 Option E: 2

Option A