What Is the Role of the Enzyme Enoyl-CoA Hydratase in the β-Oxidation

What is the role of the enzyme enoyl-CoA hydratase in the β-oxidation of saturated fatty acids?

A) It adds a hydroxyl group on the α-carbon of the fatty acid.
B) It adds a hydroxyl group on the β-carbon of the fatty acid.
C) It adds hydroxyl groups on both the α- and β-carbons of the fatty acid.
D) It adds hydrogen atoms on both the α- and β-carbons of the fatty acid.