(a) General rule: purchase-money priority. Except as otherwise provided in subsection (g) of this section, a perfected purchase-money security interest in goods other than inventory or livestock has priority over a conflicting security interest in the same goods, and, except as otherwise provided in section 9-327, a perfected security interest in its identifiable proceeds also has priority, if the purchase-money security interest is perfected when the debtor receives possession of the collateral or within twenty days thereafter.
(b) Inventory purchase-money priority. Subject to subsection (c) and except as otherwise provided in subsection (g) of this section, a perfected purchase-money security interest in inventory has priority over a conflicting security interest in the same inventory, has priority over a conflicting security interest in chattel paper or an instrument constituting proceeds of the inventory and in proceeds of the chattel paper, if so provided in section 9-330, and, except as otherwise provided in section 9-327, also has priority in identifiable cash proceeds of the inventory to the extent the identifiable cash proceeds are received on or before the delivery of the inventory to a buyer, if:
(1) The purchase-money security interest is perfected when the debtor receives possession of the inventory;