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If alpha1, alpha2 be the roots of the eq...

If `alpha_1, alpha_2` be the roots of the equation `x^2-px+1=0 and beta_1,beta_2` be those of equatiion `x^2-qx+1=0 and p^2=q^2,vecu=alpha_1hati+alpha_2hatj,and vecv=beta_1hati+beta_2hatj` then which one is necessarily true (A) `vecu_|_vecv` (B) `vec_|_vecw` (C) `vecu||vecv or vecu||vecw` (D) none of these

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