A store sells 4 reams of paper for $23.08. Which proportion can be used to find the cost of 12 reams of paper?
A12/23.08 = x/4
B23.08/4 = x/12
C4/12 = x/23.08
D4/23.08 = x/12
A12/23.08 = x/4
B23.08/4 = x/12
C4/12 = x/23.08
D4/23.08 = x/12