Read the case of Carlill v Carbolic Smoke Ball Company [1893] 1QB 256 (you may Google the name of the case on the internet) and answer the following questions.

a) In what situation would an offer to the public at large be a binding offer and in what situation would an offer to the public be an invitation to treat?

b) How can an offer be revoked? In what way could the offer to the public at large be revoked?

c) Why do you think the court rejected the defendant's argument that the offer was too vague, it was a mere advertising "puff' and there was no intention to create legal intentions and ruled otherwise?