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The half-life for decay of ""^(14)C by b...

The half-life for decay of `""^(14)C` by `beta`-emission is 5730 years. The fraction of `""^(14)C` decays, in a sample that is 22,920 years old, would be

A

`1//8`

B

`1//16`

C

`7//8`

D

`15//16`

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