Could Bart Simpson have owned comics with The Joker? Please answer step by step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The first appearance of the Joker was in 1940. Bart Simpson first appeared as a child in "The Simpsons" in 1987.
So, the final answer is yes.