PASCAL 1997 Problem 11

Twelve balloons are arranged in a circle as shown. Counting clockwise, every third balloon is popped. C is the first one popped. This continues around the circle until two unpopped balloons remain. The last two remaining balloons are
pascal 1997 11

Answer Choices
A. B,H
B. B,G
C. A,E
D. E,J
E. F,K