As a Project Manager, you are managing a multi-story building project for a customer who has requested that you have special marble flooring installed in the entryway. Your father-in-law has been doing floor covering for 20 years and is an expert. You decide to give him the work. This is an example of what?

(A) Appearance of impropriety

(B) Conflict of solicitation

(C) Because he is an expert, it is OK.

(D) Sole sourcing