Wires \( A \) and \( B \) are made from the same material. A has twice the diameter and three ti...

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Wires \( A \) and \( B \) are made from the same material. A has twice the diameter and three times the length to that of \( B \). If the elastic limits are not reached, when each wire is stretched by the same tension, Ratio of energy stored in wire \( A \) and \( B \) is:
(a) \( 2: 3 \)
(b) \( 3: 4 \)
(c) \( 3: 2 \)
(d) \( 6: 1 \)
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