1. Artisan Company and Billy's BBQ, Inc. enter into a contract for the sale of a commercial grill from Artisan to Billy's. The contract requires Artisan to deliver the grill to Kirby Delivery Service for transport to Billy's. Risk of loss passes to Billy's when

   	a.	Billy's begins using the grill.
   	b.	Kirby delivers the goods to Billy's.
   	c.	Artisan and Billy's sign the contract.
   	d.	Artisan delivers the goods to Kirby.