Question 1 Based on your understanding of "offer" and "acceptance" under the law of contract, briefly explain why a pharmacist who displays medication on the shelves would not be held liable for "selling medication without a prescription". Question 2 Sam told Shirley that when travel restrictions (due to the Covid-19 pandemic) were lifted, he would send Shirley and her mother to Australia for a two-week holiday. Last month, travel restrictions for Singaporeans were lifted by the Australian authorities thereby enabling Singaporeans to visit the country. Shirley reminded Sam of his promise, of which Sam is reluctant to keep. Explain if Sam is legally bound to keep his promise to Shirley. Question 3 Baron Cheng, who was under a two-year driving disqualification, drove his car and got into an accident along Toa Payoh Lorong 1. Fearing to be charged for "driving while under disqualification", he quickly stopped a passer-by (at the scene of the accident) and asked if he would tell the police that it was he, the passer-by, who was the driver. Baron promised the passer-by $2000 if he would do this, i.e., "take the rap" for him. Briefly explain the nature of such a contract