A person who tries to deceive people by claiming to be able to do wonderful things

Answer: Option A

One word substitute is Trickster.

Trickster: a person who cheats or deceives people.
Imposter: a person who pretends to be someone else in order to deceive others, especially for fraudulent gain.
Magician: a person with magical powers.
Mountebank: a person who deceives others, especially in order to trick them out of their money