The situation that represents irony in "The Convict and the Bishop" is option A. Valjean steals from the bishop who has shown him the kindness and understanding he sought.
Irony is a figure of speech in which words are used in such a way that their intended meaning differs from the actual meaning of the words. It may also be a situation that ends up in quite a different way than what is generally anticipated. To put it simply, it is a difference between appearance and reality.