Under UCC article 9, what is the result of perfecting a security interest?

The secured party can enforce its security interest again the debtor.

The secured party has permanent priority in the collateral even if the collateral is removed to another state.

The debtor is protected against all other parties who subsequently acquire an interest in the collateral.

The secured party has priority in the collateral over most creditors who subsequently acquire a security interest in the same collateral.

A fixture is a good that has become so related to particular real property that an interest in the fixture arises under real property law. Perfection to a security interest in a fixture usually requires

Filing of a financing statement in the office where a mortgage on the real estate would be recorded.

Filing in the office where financing statements covering other kinds of goods are recorded.

No filing if the secured party has a purchase money security interest.

Filing in both the personal property and real estate records.