Here's a problem to solve: Which of the following represents the process of photosynthesis?

Among the 4 following options, which is the correct answer?

- A: C_{6}H_{12}O_{6} -> 6CO_{2} + 6H_{2}O
 
- B: 6CO_{2} + 6H_{2}O -> C_{6}H_{12}O_{6} +6O_{2}
 
- C: 2H_{2}O -> 2H_{2} + O_{2}
 
- D: 2H_{2} + O_{2} -> 2H_{2}O
 