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The total energy radiated from a block b...

The total energy radiated from a block body source at constant temperature is collected for one minute and is used to heat a quantity of water. The temperature of water is found to increase from `20^(@)C` to `20.5^(@)C`. If the absolute temperature of the blackbody is doubled and the experiment is repeated with the same quantity of water of `20^(@)C`, the temperature of water will be:

A

`21^(@)`

B

`22^(@)C`

C

`24^(@)C`

D

`28^(@)C`

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