Which statement about compound subjects is false?

A singular verb is needed when the parts of a compound subject are thought of as one item.

In a sentence with a mixed compound subject connected by or or nor, the verb agrees with the closer subject.

A singular verb is needed when the word every or each comes before the compound subject.

In a sentence with a compound subject connected by and, the verb agrees with the closer subject.

A singular verb is needed when the parts of a compound subject are thought of as one item.