Fatty Acids Are ________; They Function in the Cell as ________

Fatty acids are ________; they function in the cell as ________.

A) short chains of double-bonded carbon molecules; storage lipids
B) short chains of double-bonded carbon molecules; vitamins and cofactors
C) four-ringed hydrocarbon molecules; key components of membranes
D) long,unbranched hydrocarbon chains with a carboxyl group at one end; building blocks for other lipids
E) short chains of double-bonded carbon molecules; vitamins,cofactors,and storage lipids