Biology

The correct answer is C.Carbohydrate and Lipid.

Both carbohydrates and lipids are made up only of the elements carbon (C), hydrogen (H), and oxygen (O).

1.Carbohydrates consist of carbon, hydrogen, and oxygen, typically in a ratio of 1:2:1 (e.g., glucose: C6H12O6).

2.Lipids (such as fats, oils, and phospholipids) also contain carbon, hydrogen, and oxygen, though the ratio of these elements may vary, and ...