Read the following dictionary entry.

as•so•ci•ate

1. to bring together or into relationship 2. to combine or join with other parts 3. a partner or colleague 4. a degree conferred especially by a junior college

Which definition best matches the use of the word associate in the sentence below?

Mr. Williams was Mr. Doyle's business associate.
A.
Definition 3
B.
Definition 1
C.
Definition 2
D.
Definition 4