AMC 12 2003b Problem 2

Al gets the disease algebritis and must take one green pill and one pink pill each day for two weeks. A green pill costs 1 dollar more than a pink pill, and Al's pills cost a total of 546 dollars for the two weeks. How much does one green pill cost?

$\text {(A) } 7 \text {(B) } 14 \text {(C) } 19 \text {(D) } 20 \text {(E) } 39$