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The volume of a piece of iron is 15cm^(3...

The volume of a piece of iron is `15cm^(3)` and its mass is 117g. The density of iron in `g//cm^(3)` and `kg//m^(3)` is

A

7800 & 7.8

B

7.8 & 7800

C

780& 7.8

D

7.8 & 780

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