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

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1. A$\mathrm{a}=\mathrm{b} \neq \mathrm{c}$ and $\alpha=\beta=\gamma=90^{\circ}$
2. Ba $\neq$ b $\neq$ c and $\alpha=\beta=\gamma=90^{\circ}$
3. C$\mathrm{a} \neq \mathrm{b} \neq \mathrm{c}$ and $\beta=\gamma=90^{\circ} \neq \alpha$
4. D$\mathrm{a} \neq \mathrm{b} \neq \mathrm{c}$ and $\alpha \neq \beta \neq \gamma \neq 90^{\circ}$