Simplify (4 to the power of 7 over 5 to the power of 2) power 3.

A. 4 to the power of 10 over 5 of the power 2
B. 4 to the power of 4 over 5
C. 4 to the power of 21 over 5 to the power of 6
D. 12 to the power of 7 over 15 to the power of 2