((-21)/(2)m)/(2)=(7)/(2)n mn ne 0 {:...

`((-21)/(2)m)/(2)=(7)/(2)n`
`mn ne 0`
`{:("Quantity A","Quantity B"),(3m,-n):}`

A

Quantity A is greater.

B

Quantity B is greater.

C

The two quantities are equal.

D

The relationship cannot be determined from the infromation given.

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The correct Answer is:

D

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