The magnitude of velocities of the points on a rigid link is

• A. directly proportional to the distance from the points to the instantaneous centre and is parallel to the line joining the point to the instantaneous centre.
• B. directly proportional to the distance from the points to the instantaneous centre and is perpendicular to the line joining the point to the instantaneous centre.
• C. inversely proportional to the distance from the points to the instantaneous centre and is parallel to the line joining the point to the instantaneous centre.
• D. inversely proportional to the distance from the points to the instantaneous centre and is perpendicular to the line joining the point to the instantaneous centre.