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

• A
  $a \neq b \neq c$ and $\alpha = \beta = \gamma = 90^{\circ}$
• B
  $a \neq b \neq c$ and $\alpha = \gamma = 90^{\circ} \neq \beta$
• C
  $a \neq b \neq c$ and $\alpha = \gamma = 90^{\circ} \neq \beta$ (Note: Corrected to match standard definition)
• D
  $a \neq b \neq c$ and $\alpha \neq \beta \neq \gamma \neq 90^{\circ}$