How Are the Hydroxyl Groups Oriented in an α-D-Glucopyranose Ring

How are the hydroxyl groups oriented in an α-D-glucopyranose ring?

A) All the hydroxyl groups are present above the plane of the ring.
B) All the hydroxyl groups are present below the plane of the ring.
C) The hydroxyl at carbon 1 is present above the plane of the ring.
D) The hydroxyl at carbon 1 is present below the plane of the ring.