Problem: David wished to sell his condominium unit. He called Michelle who was then looking to buy a condominium unit for herself. They met and spoke over coffee. David then agreed to sell to Michelle his flat at the Tandra Condominium, and they shook hands on their deal. Michelle went to a nearby bank ATM, withdrew some cash and gave it to David as a token of her verbal agreement to purchase David's unit. She then started sourcing for a bank to finance her purchase. In the meantime, the market prices of units at the Tandra Condominium shot up unexpectedly. David refused to go through with the sale to Michelle. Michelle sued David.
a) Assuming that the agreement was made orally, and that there was no written agreement made between David and Michelle, please explain whether Michelle can prove a case of breach of contract against David.