Four friends, standing in a row for a picture, are in the following order:
\text { Anyu Brad Chi Diego }
The friends then move so that Anyu is not in the 1^{\text {st }} position, Brad is not in the 2^{\text {nd }} position, Chi is not in the 3^{\text {rd }} position, and Diego is not in the 4^{\text {th }} position. In how many ways can the friends do this? That is, in how many ways can they rearrange themselves so that each person is not in their original position?
Answer Choices
A. 6
B. 9
C. 12
D. 18
E. 24