Question 4 On Monday 21st March, the following notice is placed in the window of Adam's art gallery: Incredible Offer! Original painting of Moonee Ponds Creek by Albert Nungarryia Price: $10,000 This offer ends at 12 noon on Wed 14 Sept Call 555-8181-888 Ask for Adam Amy saw the notice on Tues 13 Sept on her way to the airport to catch a flight to Bali. She posts a letter to Adam from the airport post office saying she agrees to pay $10,000 and that she will make the payment on her return to Melbourne on 21 Sept. Sandy phones the gallery on Tuesday evening at 8.00pm to express her interest in the painting, but she receives a recorded message that the gallery is closed. She leaves a message that she will pay $10,000 for the painting. In her voice message, she says that she will go to the gallery with a cheque during her lunch break on Wednesday. Adam did not check his phone when he reached the gallery on Wednesday morning and did not receive Sandy's message. At 9.00am on Wednesday morning, Nancy entered the gallery with a cheque for $10,000. Adam agreed to sell the painting to Nancy and she left the gallery with her purchase after handing over the cheque. The letter posted by Amy reaches Adam's gallery at 9.30am on Wednesday morning and Sandy arrives at the gallery during her lunch break with a cheque for $10,000. Advise Adam. [20 marks]