Adam vividly remembers when he had to go to the emergency room for stitches. this is an example of which type of long-term memory?

Am sure this is an example of Episodic long term memory.  Episodic memory is the memory of autobiographical events which include times, places, associated emotions, and other contextual who, what, when, when and why knowledge; that can be explicitly stated or conjured. It is the collection of past personal experiences that occurred at a particular time and place.

Birth orgraduate orschool