Question: Consider the following reaction showing photosynthesis: 6CO2(g) + 6H2O(l) → C6H12O6(s) + 6O2(g) DH = + 2800 kJ/mol Which of the following is true regarding the thermal energy in this system?
A: It is transferred from the surroundings to the reaction.
B: It is transferred from the reaction to the surroundings.
C: It is transferred from the reactants to the products.
D: It is transferred from the products to the reactants.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option.