B
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
If a chemical reaction such as photosynthesis begins with 6 atoms of carbon [C], how many atoms of carbon [C] should be in the products?

### Choices:
A. 12 atoms of carbon [C]
B. 6 atoms of carbon [C]
C. 3 atoms of carbon [C]
D. 2 atoms of carbon [C]

### Answer:
