A potometer was used to compare the rate of loss of the same volume of water from a plant under different environmental conditions as under a fan, at the sea shore, under the sun, in the airy laboratory and in cupboard. What time was likely to have been obtained in a cupboard?

A. 28 secs
B. 25 secs
C. 20 secs
D. 15 secs
E. 30 secs  

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Correct Answer: E