Point P is a point on a circle with center point O. Point P is also a point on PQ←→, which is tangent to circle O. Which of the following describes the relationship between radius OP and tangent PQ←→?

A.) OP and PQ←→ are sometimes perpendicular
B.) OP and PQ←→ are always perpendicular
C.) OP and PQ←→ are never perpendicular.
D.) The relationship is dependent on the placement of point P on the circle.