For different figures, gives the correct answer $.$

a$-$ By Applying a $C_2$ rotation$-$reflection about

the $z$ axis on point $A,$ which point results? $(1$

or $2$ or $3$ or $4)($fig $1)$

b$-$ Find the miller indices for this plane $($fig

c$-$ Find the direction shown in the figure $3.$

d$-$ Which structure has this material in the

figure $4?$