Which of the following is using the product Rule for Exponents correctly? (1 point)

A. 5^3 x 5^7 =5^21
B. 12^6 x 12^-5=12
C. 8^2 x 8^10=16^12
D. 32^6 x 32^3=32^3

The correct answer is D. 32^6 x 32^3 = 32^9