question_answer

If \[\vec{a},\vec{b},\vec{c}\] are non-coplanar vectors and \[\vec{p},\vec{q},\vec{r}\] are defined as \[\vec{p},=\frac{\vec{b}\times \vec{c}}{[\vec{b}\vec{c}\,\vec{a}]},\vec{q}=\frac{\vec{c}\times \vec{a}}{[\vec{c}\vec{a}\,\vec{b}]},\vec{r}=\frac{\vec{a}\times \vec{b}}{[\vec{a}\,\vec{b}\,\vec{c}]}\]

A)  0           

B)  1             

C)  2                    

D)  3