Please see attached... I chose there are a total of 2 steroisomers and both are optically active
If you look carefully, you will notice that the compound in question has two chiral carbons, C2 and C3 -- the two carbons with the chlorines attached.
They are both chiral because they both have four different groups attached.
C2 has an H, Cl, CH2OH, and CHClCH2OH attached.
C3 also has an H, Cl, CH2OH, and CHClCH2OH ...
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