Two metallic wires A and B are of same material and have equal length. If the cross-sectional area of B is double that of A, then which one among the following is the electrical resistance of B?

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Q: 79 (NDA-I/2012)
Two metallic wires A and B are of same material and have equal length. If the cross-sectional area of B is double that of A, then which one among the following is the electrical resistance of B?
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question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,5,18,4,9,5,5

keywords: 

{'electrical resistance': [0, 0, 0, 1], 'equal length': [2, 0, 1, 2], 'same material': [0, 0, 2, 4]}