Which of the following statements are correct?

1.   Starch forms helical secondary structures while cellulose doesn’t have complex helices.

2.   Palmitic acid has 14- CH₂ groups in its structure.

3.   Maltose is a disaccharide made up of glucose and fructose.

4.   The number of carbon and oxygen atoms present in glucose is less than those present in ribose.

• A

  1 and 2

• B

  1, 2 and 3

• C

  1, 2, 3 and 4

• D

  3 and 4