Answer choice C is Correct.
Oleic acid is an eighteen-carbon acid with one pi bond between the eighth and ninth carbons. The pi bond in oleic acid has cis orientation. Treating oleic acid with deuterium (D2) and a catalytic metal like palladium will add two deuteriums across the pi bond of the alkene molecule. The two deuteriums will add syn to one another at carbons eight and nine. The result will be the formation of two new chiral centers. There are no chiral centers to begin with, so the product has exactly two chiral centers.
