A wheel has moment of inertia 5 cross times 10 to the power of negative 3 end exponent k g times m squared and is making 20 revolutions per second. The magnitude of torque needed to stop it in 10 s is: A. 2.5 straight pi cross times 10 to the power of negative 2 end exponent space straight N times straight m B. 4 straight pi cross times 10 to the power of negative 2 end exponent space straight N times straight m C. 4.5 straight pi cross times 10 to the power of negative 2 end exponent space straight N times straight m D. 2 straight pi cross times 10 to the power of negative 2 end exponent space straight N times straight m