Why Was the Plaintiff Bound by the Exclusion Clause in the Case

Multiple Choice

Why was the plaintiff bound by the exclusion clause in the case of: L'Estrange v Graucob Ltd [1934] 2 KB 394?

A) Because the clause applied to the damage that occurred.
B) Because the clause was explained to them.
C) Because the clause was contained in a written document signed by the plaintiff.
D) Because of previous dealings between the parties.