A typewriter, which was subject to a prior UCC security interest, was delivered to Ed Fogel for repair. Fogel is engaged in the business of repairing typewriters. Fogel repaired the typewriter. However, the owner of the typewriter now refuses to pay for the services performed by Fogel. The state in which Fogel operates his business has a statute which gives Fogel an artisan's lien on the typewriter. Fogel's artisan's lien

A. Takes priority over a prior perfected security interest under all circumstances.
B. Is subject to a prior perfected purchase money security interest under all circumstances.
C. Is subject to a prior unperfected security interest where the statute is silent as to priority.
D. Takes priority over a prior perfected security interest unless the statute expressly provides otherwise.

D. Takes priority over a prior perfected security interest unless the statute expressly provides otherwise.