The twining moment (T) delivered by a flywheel with respect to its angular displacement is given by the following expression:
$$T = 14000 + 7000 \sin \theta$$
The values of $$\theta$$ for which delivered torque is equal to mean torque for a single cycle are

A

$$0^\circ, 180^\circ, 360^\circ$$

B

$$90^\circ, 270^\circ, 360^\circ$$

C

$$90^\circ, 270^\circ, 180^\circ$$

D

$$0^\circ, 270^\circ, 360^\circ$$