Who is the detective created by Agatha Christie, known for his mustache, meticulous demeanor, and Belgian origin?
A. Hercule Poirot
B. Miss Marple
C. Tommy and Tuppence
D. Inspector Japp
Hercule Poirot is the detective created by Agatha Christie, known for his distinctive mustache, meticulous demeanor, and Belgian origin, appearing in many of her famous mystery novels.