Donna called her stockbroker Henry and told him to purchase 300 shares of Royex Corporation shares at $15 per share, the current market price. Henry agreed to do so, but became distracted and failed to do so. The price of the shares rose $3 in price that day. In the evening, Donna in a telephone conversation agreed to sell 300 shares of Royex to Sid. Assuming Henry and Donna dispute the validity of the contracts, which of the contracts are enforceable in court?