If \( \alpha, \beta \) be roots of \( x^{2}+p x+1=0 \) and \( \gamma, \delta \) be the roots of ....

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If \( \alpha, \beta \) be roots of \( x^{2}+p x+1=0 \) and \( \gamma, \delta \) be the roots of \( x^{2}+q x+1=0 \), then \( (\alpha-\gamma)(\beta-\gamma)(\alpha+\delta)(\beta+\delta) \) is
\( \mathrm{P} \)
equal to
W
(1) \( p^{2}+q^{2} \)
(2) \( p^{2}-q^{2} \)
(3) \( q^{2}-p^{2} \)
(4) None of these


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