In a Hydrogen Atom, Orbitals with the Same Energy

In a hydrogen atom, orbitals with the same energy:
I. extend the same distance from the nucleus.
II. have the same principle quantum number, n.
III. are referred to as iso-electronic.
IV. are referred to as degenerate.
V. are represented by 1s and 2s orbitals.

A) I, III, IV
B) I, II, IV
C) I, IV, V
D) I, II, III
E) I, II, III, and IV