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Two springs \( A \) and \( B \) are identical but \( A \) is harder than \( B\left(k_{A}k_{B}\right) \). Let \( W_{A} \) and \( W_{B} \) represent the work done when the springs are stretched through the same distance and \( W_{A}^{\prime} \) and \( W_{B}^{\prime} \) are the work done when these are stretched by equal forces, then which of the following is true
[AMU PMT 2009]
(a) \( W_{A}W_{B} \) and \( W_{A}^{\prime}=W_{B}^{\prime} \)
(b) \( W_{A}W_{B} \) and \( W_{A}^{\prime}W_{B}^{\prime} \)
(c) \( W_{A}W_{B} \) and \( W_{A}^{\prime}W_{B}^{\prime} \)
(d) \( W_{A}W_{B} \) and \( W^{\prime}{ }_{A}W_{B}^{\prime} \)
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