Lately, Ron's Right Renovations Has Been Receiving Numerous Requests to Tile

Lately, Ron's Right Renovations has been receiving numerous requests to tile customers' kitchens and bathrooms. However, none of the contractors who work for this company specialize in tiling. The owner, Ron, starts recruiting for a tiling expert. Why does Ron decide to hire an external candidate instead of hiring from within?

A) It is less expensive to hire external candidates than internal candidates.
B) He would have to pay for one of his contractors to go back to school to learn this new skill.
C) If he hires an external candidate, it will boost employee morale.
D) There are better-qualified people outside of the organization.
E) His employees will be relieved that they don't have to learn a new skill, which will increase their productivity.