Marvel Electronix Orders Thirty Hard Drives from Nano Computers,Inc

Marvel Electronix orders thirty hard drives from Nano Computers,Inc.The hard drives are stored in Onyx Warehouse.Under the terms of the order,Nano must give Marvel a warehouse receipt for the goods,which Marvel will then pick up.Title to the goods passes to Marvel when

A) Nano gives Marvel a warehouse receipt for the goods.
B) Marvel orders the goods.
C) Marvel picks up the goods.
D) Onyx Warehouse stores the goods.