Side relief angle of a single point tool is the angle

• A. by which the face of the tool is inclined towards back
• B. by which the face of the tool is inclined sideways
• C. between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool
• D. between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base