Explain, with reasons, whether the following contracts are valid, voidable or void: a) Josh lost his wallet and mobile phone when he was travelling to work by bus. The next day, Josh received a call from a lady named Megan who found his wallet and mobile phone. Over the phone, Megan told Josh that "You must sell me your mobile phone for RM100 or else I will steal your bicycle, I know where your house is". Josh was too frightened that Megan was going to steal his bicycle and agreed to Megan but now regretted his decision. b) Jacob and Vanessa had entered into an agreement for the sale of a cargo of durians arriving from Thailand to Malaysia. It turns out that both parties were not aware of the types of durians. One party thought it was Musang King and the other party thought it was D24