Following are the statements with reference to 'lipids'. (a) Lipids having only single bonds are called unsaturated fatty acids (b) Lecithin is a phospholipid. (c) Trihydroxy propane is glycerol. (d) Palmitic acid has 20 carbon atoms including carboxyl carbon. (e) Arachidoonic acid has 16 carbon atoms. Choose the correct answer from the options given below.

1. A. (c) and (d) only
2. B. (b) and (c) only
3. C. (b) and (e) only
4. D. (a) and (b) only

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