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Difficult

Simplifying with Negative Exponents

GRE-XA4RV1

$$4 \cdot 6^{ -2 }=$$

A

$-48$

B

$\cfrac { 1 }{ 36 }$

C

$\cfrac { 1 }{ 9 }$

D

$-36$

E

$-\cfrac { 1 }{ 9 }$