The average temperature for freezing foods is less than -17°C. Which of the following best describes this situation?
A.
The average temperature for freezing foods is colder than 17°C below zero.

B.
The average temperature for freezing foods is colder than 17°C above zero.

C.
The average temperature for freezing foods is warmer than 17°C below zero.

D.
The average temperature for freezing foods is warmer than 17°C above zero.