Which of the Following Would Be the Best Example of a Broker

Which of the following would be the best example of a broker?

A) Tri-State Lumber Supply does not actually store, handle, or deliver lumber, but rather solicits orders from retail hardware and home improvement stores, takes title to the lumber, then arranges for it to be shipped directly from sawmills to the retail stores.
B) Jill Moon helps buyers and sellers of used heavy construction equipment negotiate the terms and conditions of their transactions, but does not actually take title to any of the equipment, nor does she develop long-term relationships with the buyers or sellers.
C) Hal Hinton is not an employee of Hyloft Golf Clubs, but he does solicit sales for their products at golf and sporting goods stores in a fairly large sales territory.
D) Spence Coker is employed by a vacuum cleaner company, and goes door-to-door selling products produced by his company.