3. Hydrogenated vegetable oil is prepared by adding H2 to double bonds of unsaturated fats (one H2 per double bond). How many double bonds are present in a molecule of adrenic acid (M = 332.5 g/mol) if 16.16 g of H2 is required to fully hydrogenate 665 g of the fat?
A. 8
B. 4
C. 2
D. 6
E. 10