Explain how the quotient of powers was used to simplify this expression. 5 to the 4th power over 25 equals 5 to the 2nd power.
a. by simplifying 25 to 5 to the 2nd power to make both powers base five, and subtracting the exponents.
b. by simplifying 25 to 5 to the 2nd power to make both powers base five, and adding the base exponents
c. by finding the quotient of the bases to be 1/5, and cancelling common factors
d. by finding the quotient of the bases to be 1/5, and simplifying the expression