Answer the following questions, with reference to the circle with centre B.
(1) Name all radii and diameters shown in the circle.
(2) Name all points on the circle.
(3) Write whether the following statements are true or false.
(a) Seg PM is a diameter. ( )
(b) Seg RS is a diameter. ( )
(c) Seg CQ is a radius. ( )
(d) Seg RC is not a diameter. ( )