CH_(3)-underset(OH)underset(|)CH-underset(OH)underset(|)CH-CH_(2)-CH_(3) number of optical isomers possible for this compound is

CH_(3)-underset(OH)underset(|)CH-underset(OH)underset(|)CH-CH_(2)-CH_(

1.	CH_(3)-underset(OH)underset(\|)CH-underset(OH)underset(\|)CH-CH_(2)-CH_(3) number of optical isomers possible for this compound is
Answer» SOLUTION :`2^(2)=4`