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Rate of cooling of body is 0.5^(@)C/min,...

Rate of cooling of body is `0.5^(@)C`/min, when the system is `50^(@)C` above the surroundings. When a system is `30^(@)C` above the surroundings, the rate of cooling will be

A

`0.3^(@)C//min`

B

`0.6^(@)C//min`

C

`0.7^(@)C//min`

D

`0.4^(@)C//min`

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The correct Answer is:
A
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