The weather forecast states that the temperature will be lower than –5°F tonight. Let t represent the temperature in degrees Fahrenheit.

Which inequality models this situation?

A.
t < –5 and t may be a negative number

B.
t < –5 and t must be a positive number

C.
t > –5 and t may be a negative number

D.
t > –5 and t must be a positive number