What Makes Canadian Kent Cochrane's Amnesia a Fascinating Case Compared

What makes Canadian Kent Cochrane's amnesia a fascinating case compared to other cases of amnesia?

A) He has no recall of semantic facts prior to his accident.
B) He cannot recall procedural skills from one day to the next and must relearn basic care skills like teeth brushing daily.
C) He cannot recollect any specific event in which he himself participated.
D) He has total recall of episodic memory from early childhood but nothing past the age of five years.