Donna bought a stove and refrigerator from Sears to be put in her new home. The price of the stove was $1000 and the price of the refrigerator was $1500. Donna purchased the 2 items in one transaction. She paid $1000 in cash and put the balance ($1500 plus the applicable sales tax) on her Sears Credit Card. Assume that Sears retains a security interest in all items purchased with a Sears card. Donna never made a payment on her Sears card. Sears never filed a financing statement. Donna later filed chapter 7 bankruptcy. The jurisdiction has traditionally applied the "dual status" rule. Which statement is correct?

a. Sears has a perfected security interest in the stove

b. Sears has a perfected security interest in the refrigerator

c. Sears’ security interest was not perfected because they did not file a financing statement

d. Both a and b