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Which of the following types of solids i...

Which of the following types of solids is most likely to be soft, have a low melting point and don't conduct electricity when melted?

A

`|x|+|y|=8`

B

`|x|+2+|z|=9`

C

`omega=(4n+1)(pi)/2, n epsilonI`

D

`|x|+|y|=6`

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