Metal Muscles places an advertisement on their window stating: The first 20 people to complete the Sweat Arena Training on our new brand Platinum Fitness machines within ten minutes; will be rewarded with one year's free membership. Patricia notices the advertisement and completes the task, within ten minutes. Patricia is one of the first 20 people. Whilst Patricia is completing the Sweat Arena Training, the Manager places a notice on the window withdrawing the promotion; the Manager is refusing to give Patricia her free membership for 12 months, stating that the promotion is no longer valid.

Advise Patricia whether a valid legally binding contract is resulted.

HONGKONG LAW