Question $7\mathrm{.}25-$ Asphalt pavement roller ${?}^8$ here has a mass of $10,000kg.$ Its wheels have a radius of gyration of $0\mathrm{.}5m$ and a mass of $2,000kg$ each. The diameter of each wheel is $1\mathrm{.}1m.$ If the roller is moving at a speed of $10k\frac{m}{h},$ its kinetic energy $)$ is most nearly:

A$.15,000$

B$.30,000$

C$.40,000$

D$.70,000$