1980 AHSME Problem 1

The largest whole number such that seven times the number is less than 100 is

\text{(A)} \ 12 \qquad \text{(B)} \ 13 \qquad \text{(C)} \ 14 \qquad \text{(D)} \ 15 \qquad \text{(E)} \ 16

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.