Biology

The correct answer is B.1:2:1.

Explanation:

All carbohydrates follow the general molecular formula C₆H₁₂O₆, which represents a ratio of 1 carbon (C) to 2 hydrogen (H) to 1 oxygen (O). This is a key feature of carbohydrates, which are composed of carbon, hydrogen, and oxygen atoms, and are typically referred to as having a 1:2:1 ratio of these elements.