Thermal properties and temperature — practice question

The specific heat capacity of ice is $2000\text{ J kg}^{-1}\,^{\circ}\text{C}^{-1}$. What thermal energy is needed to increase the temperature of $100\text{ g}$ of ice by $5\,^{\circ}\text{C}$?

• A40 J
• B100 J
• C1000 J
• D4000 J