On March 1, Green went to Easy Car Sales to buy a car. Green spoke to a salesperson and agreed to buy a car that Easy had in its showroom. On March 5, Green made a $500 down payment and signed a security agreement to secure the payment of the balance of the purchase price. On March 10, Green picked up the car. On March 15, Easy filed the security agreement On what date did the debtor have rights in the collateral? March 5 March 10 March 1 March 15