A piece of iron with mass $m$ is put into a mixture of ice and water. Its temperature falls from $\theta_1$ to $\theta_2$. How much thermal energy is lost by the piece of iron?
- A$m \times \text{specific heat capacity of iron} \times (\theta_1 - \theta_2)$
- B$m \times \text{specific heat capacity of iron} \times \theta_2$
- C$m \times \text{heat capacity of piece of iron} \times (\theta_1 - \theta_2)$
- D$m \times \text{heat capacity of piece of iron} \times \theta_2$