Your business has agreed to ship 3000 widgets to a manufacturer in Toronto by August 1st. On July 15th, you phone the company in Toronto to let them know that your business is not going to be able to meet this order because of a strike by your production staff that is unlikely to be resolved in time. Your phone call is an example of

1. anticipatory breach.

2. unilateral discharge.

3. defective performance.

4. self-induced impossibility.