For an experiment, 50.0g of H2O was added to a coffee-cup calorimeter. The initial temperature of the H2O was 22.0°C, and it absorbed 300.J of heat from an object that was carefully placed inside the calorimeter. Assuming no heat is transferred to the surroundings, which of the following was the approximate temperature of the H2O after thermal equilibrium was reached? Assume that the specific heat capacity of H2O is 4.2J/(g⋅C).

A) 21.3 C

B) 22.0 C

C) 22.7 C

D) 23.4 C