Wedge and Dash

Q.

In which of the following representations given below spatial arrangement of group/atom different from that given in structure $‘a^{\prime }$?

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Q. Let’s try another question.
Which of the following are possible wedge – dash representations for Glyceraldehyde.

Assume the H and OH on the second carbon are coming out of the plane.

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2. 
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4. 

Q. Write wedge dash representation for the following compound.
$C{H}_{3}Cl$
Assume one Hydrogen is below the plane and chlorine is above the plane.

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