Context: Life on Earth comes in many forms, from microscopic bacteria to giant redwood trees. Despite their differences, all living things are made up of the same types of molecules. Many of these molecules contain carbon and are called organic compounds.
There are four main groups of organic compounds found in cells. One of these groups is carbohydrates.
Which of the following is a primary function of carbohydrates?
A. to store the information needed for an organism's growth and development
B. to form the rigid cell wall in a plant cell
C. to control chemical reactions
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

B