A 200W heater is used to heat a metal object of mass \(5 \mathrm{~kg}\) initially at \(10^{\circ} \mathrm{C}\). if the temperature rise of \(30^{\circ} \mathrm{C}\) is obtained after \(10 \mathrm{~mm}\), the heat capacity of the material is ___________
A. \(1.2 \times 10^{4} \mathrm{~J}^{\circ} \mathrm{C}^{-1}\) B. \(6.0 \times 10^{4} \mathrm{~J}^{\circ} \mathrm{C}^{-1}\) C. \(8.0 \times 10^{4} \mathrm{~J}^{\circ} \mathrm{C}^{-1}\) D. \(4 \cdot 010^{4} \mathrm{~J}^{\circ} \mathrm{C}^{-1}\)
