What was Graham Ackerman's achievement at the 2001 United States nationals?

A. He placed 1st in the still rings and the horizontal bar exercises and 9th in the all-around
B. He placed 1st in the still rings and the parallel bars exercises and 9th in the all-around
C. He placed 1st in the floor and the vault exercises and 9th in the all-around
D. He placed 1st in the pommel horse and the parallel bars exercises and 9th in the all-around
Answer: 