A vending machine returns change in quarters only. It sells waters for $1.25, sodas for $1.50, and athletic drinks for $1.75. A person makes a purchase by paying with two dollar bills. Let V(n) represent the amount of money returned in change as a function of the number of coins returned n. Which of the following is the most reasonable description of the domain for n?
A. All real numbers between 1 and 3
B. All real numbers between 0.25 and 0.75
C. All integers between 0 and 8
D. All integers between 1 and 3