An automobile engine develops $100 \mathrm{~kW}$ when rotating at a speed of $1800 \mathrm{rev} / \mathrm{min}$. What torque does it deliver
(a) $350 \mathrm{~N}-\mathrm{m}$
(b) $440 \mathrm{~N}-\mathrm{m}$
(c) $531 \mathrm{~N}-\mathrm{m}$
(d) $628 \mathrm{~N}-\mathrm{m}$