Answer:
the answer has to be A
Explanation:
A and D are both right
Since 1/5*1/5*1/5*1/5 is 1/3125 or 5^-4, look below:
(5^-2)^2=5^(-2*2)=5^-4
5^2*5^-6=5^(2+-6)=5^-4
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