question_answer

In a monoclinic unit cell, the relation of sides and angles are respectively:

A) \[a=b\ne c\] and \[\alpha =\beta =\gamma ={{90}^{{}^\circ }}\]

B) \[a\ne b\ne c\] and \[\alpha =\beta =\gamma ={{90}^{{}^\circ }}\]

C) \[a\ne b\ne c\] and \[\beta =\gamma ={{90}^{{}^\circ }}\ne \alpha \]

D) \[a\ne b\ne c\] and \[\alpha \ne \beta \ne \gamma \ne 90{}^\circ \]