66. Rank the degree of unsaturation in each of the following compounds.I. Cholesterol , C27H46O II. DDT, C14H9Cl5 III. Prostaglandin E1, C20H34O5 IV. Caffeine , C8H10N4O2
(A) I ＞ III ＞ II ＞ IV
(B) II ＞ IV ＞ I ＞ III
(C) I ＞ II ＞ III ＞ IV
(D) II ＞ IV ＞ III ＞ I
(E) I ＞ IV ＞ II ＞ III