Which revision best removes the informal language from this passage?
(1) I believe that I would make an excellent receptionist at Animal Lovers Veterinary Clinic, because I have extensive customer service experience.

(2) As a cashier at Sir Save-a-Lot, I served an average of 70 customers per shift. (3) My customers were always satisfied, because, well, I'm basically a grocery-scanning fiend.

A.Change only sentence 1 to "I believe that I would make an excellent receptionist at Animal Lovers Veterinary Clinic, because I have a large amount of customer service experience."

B.Change only sentence 2 to "As a cashier at Sir Save-a-Lot, I had the opportunity to provide service to an average of 70 customers per shift."

C.Change only sentence 3 to "My customers were always satisfied, because of my speed, skill, and attention to detail."

D.There is no informal language, so no change is necessary.