If 5a = 3125, then the value of 5(a

If 5^a = 3125, then the value of 5^{(a - 3)} is:

A 25

B 125

C 625

D 1625

Correct Answer: Option A

5^a = 3125

or , 5^a = 25*125

or , 5^a = 5^2 * 5^3

or , 5^a = 5^5

or, a = 5

Therefore, 5^(a - 3)

= 5^(5 - 3)

= 5^2

= 25.