Which of the following contracts would be void due to fraudulent misrepresentation?

Carla unknowingly sells a painting to a collector thinking it is genuine. However, the collector finds out that it actually is an imitation.

Janet owns a pair of zircon earrings. She sells them claiming they are diamonds and receives a much higher price for them.

Gary has been the McGill family attorney for decades. When he needs investors for his business, he convinces Mr$.$ McGill to invest in the new business.

Mikhail wants Ivana to sign a contract for the sale of her apartment. He tells her that if she does not sign the contract, he will harm her son.