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How many asymmetric carbon atoms are cre...

How many asymmetric carbon atoms are created during the complete reduction of benzil `(PhCOCOPh)` with `LiAlH_(4)`? Also wrie the number of possible stereoisomers formed as the product.

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`underset("Benzil")(Ph-overset(O)overset(||)(C)-overset(O)overset(||)(C)-Ph)overset(LiAlH_(4))underset("Reduction")rarrunderset(1,2-"Diphenylethan"-1,2-"diol")(Ph-underset(**)overset(OH)overset(|)(C)H-underset(**)overset(OH)overset(|)(C)H-Ph)`
Three stereoisomers are possible for the above compound.
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