Which of the following statements best describes the structure of waxes?
(a) long-chain unsaturated carboxylic acids
(b) long-chain saturated carboxylic acids
(c) long-chain esters
(d) short-chain esters
(a) long-chain unsaturated carboxylic acids
(b) long-chain saturated carboxylic acids
(c) long-chain esters
(d) short-chain esters