One of the main characteristics of a memoir is first-person narration, because a memoir is usually written by a person who has actually experienced all of those memories. A memoir is a French word meaning memory, so this is a text based on someone's memories. Also, a memoir is a blend of actual facts, things that the author has experienced throughout his or her life, and imagination used to create a mixture between a fictional and non-fictional work of art.
A. The sentence works fine. one could argue B, but a colon is used to separate a run-on or show two complete thoughts in the same sentence, so arguably B would not work either.
