Camille subtracted 3,256 from 6,000 and got 9,256.


Which correctly explains the mistake that Camille made and gives the correct answer?

A.
Camille added instead of subtracting. The correct answer is 2,744.

B.
Camille added instead of subtracting. The correct answer is 3,256.

C.
Camille forgot to regroup. The correct answer is 3,256.

D.
Camille forgot to regroup. The correct answer is 3,854.