please help, i am being timed!!

Which expression is equivalent to StartFraction 7 Superscript 5 Over 7 squared EndFraction?

A) (7 times 5) (7 times 2)

B) (7 times 7 times 7 times 7 times 7) (7 times 7)

C) StartFraction 7 times 5 Over 7 times 2 EndFraction

D) StartFraction 7 times 7 times 7 times 7 times 7 Over 7 times 7 EndFraction

please help i am being timed Which expression is equivalent to StartFraction 7 Superscript 5 Over 7 squared EndFraction A 7 times 5 7 times 2 B 7 times 7 times class=