On my first day at Dr. Farber’s office, I entered the building feeling confident. As soon as the bells on the door chimed, a rotund kitty came running over to greet me. He rubbed his face against my calves and purred. Dr. Farber’s assistant then emerged from the reception area and exclaimed a piercing, sing-songy “hello, I’m Sherrilee.” As I bent down to scratch the cat’s ears, another person leaned out from the reception area and called, “Is he here? Is he here?” in a big booming voice. I silently nodded, taken aback by the enthusiastic salutations. I tended to be quiet and shy until I got to know a person, so I began to worry that maybe this group of people wasn’t suitable for me. Based upon the author's use of details and language in paragraph 4, what can the reader conclude about the people who work for Dr. Farber? A) They are timid and sensitive. B) They are friendly and outgoing. C) They are serious and indifferent. D) They are formal and professional.