What is the answer and why? (Can you please explain why other answers are not suitable as well)

Kate is the owner of the construction services business. Kate hires Jake as a salesperson, going to pay him 20 USD per hour plus 15% of the sales, so Kate and Jake: A) Partners because Jake receives a share of the store's profits B) partners because Jake is responsible for some of the business's sales C) not partners, because Jake doesn't have an ownership interest or management right in the business D) not partners, because Jake doesn't equally share the business's profits