Brittany misses school one day because she is sick and needs to go to the doctor. She tells the doctor her symptoms and the doctor concludes that she has a common cold. Which of the following answer
choices best describes the common cold?

A. It multiplies with a host cell, and cannot be treated with antibiotics.

B. It multiplies without a host cell, and cannot be treated with antibiotics.

C. It multiplies with a host cell, and can be treated with antibiotics.

D. It multiplies without a host cell, and can be treated with antibiotics.