At a Latitude of +50 $\degree$ , How Far Above the Horizon Is the North Celestial

At a latitude of +50 $\degree$ , how far above the horizon is the north celestial pole located?

A) 0 $\degree$
B) 40 $\degree$
C) 50 $\degree$
D) 90 $\degree$
E) It is not visible at that latitude.