Lisa Goes to the Local Appliance Store and Buys an Oven

Lisa goes to the local appliance store and buys an oven on credit. The store extends her credit. The store's security interest in the oven perfects when:

A) Lisa completes the financing statement and leaves with the oven
B) the store files the financing statement with the Secretary of State
C) the store posts notice of Lisa's security interest in the newspaper
D) the store posts notice of its security interest
E) the store notifies consumer credit agencies of the existence of the security interest