The casting director is looking for an actor to play a wise, old history professor known for his profound thoughts and gentle nature. Which detailed description of an actor's physical appearance *best fits* this role, providing clear reasons for their suitability?
A) A young man with a clean-shaven face, bright eyes, and an energetic, youthful presence.
B) A person of average height, with neatly combed dark hair, and an intense, focused gaze.
C) A man with a distinguished silver beard that reaches his chest, deeply lined eyes suggesting years of contemplation and wisdom, and a slightly stooped, contemplative posture.
D) A very tall woman with vibrant red hair, a cheerful disposition, and a booming laugh.
E) Someone with a powerful, resonating voice and a very outgoing, charismatic personality.