Joanna takes a security interest in the equipment in Jason Store and files a financing statement claiming ‘‘equipment and all after-acquired equipment.'' Berkeley later sells Jason Store a cash register, taking a security interest in the register and
(a) files nine days after Jason receives the register, or
(b) files twenty-five days after Jason receives the register.
If Jason fails to pay both Joanna and Berkeley and they foreclose their security interests, who has priority on the cash register?