Which of the following lenders failed to perfect their security interest?

	A.	Home Depot sells me a new refrigerator for my home on credit and does not file a financing statement.
	B.	Frank is in the office supply business and signs a security agreement in favor of USBank to "all his inventory now owned and hereafter acquired". USBank files a financing statement. Later, Old Dominion Wholesale Office Supply Company agrees to sell Frank new office supplies for retail sale. Old Dominion gives notice to USBank of its security interest and files its financing statement after delivering the new inventory to Frank.
	C.	A bank loans Frank money to refinance his student loans. Frank signs a security interest in his "office equipment now owned and hereafter acquired". The bank does not file a financing statement.
	D.	A friend loans Frank money to start his CPA business and takes back a security interest in Frank's Rolex watch. The friend takes possession of the watch.