Correct option is A
Truing is the operation performed to make the periphery of a grinding wheel concentric with its axis and to recover its lost shape. Truing is essential to correct any irregularities on the wheel's surface and ensure that it rotates smoothly and uniformly. This process restores the wheel to its proper shape and ensures efficient and accurate grinding operations. Truing is often followed by dressing, which sharpens the cutting edges of the abrasive grains on the wheel's surface.
