Select the correct answer.
The sale of sweaters in a town changes with the temperature. If a statistical model predicts that daily sales (in dollars) are determined by the function s = 900 − 100t, where t is the temperature (in degrees Celsius), what is the temperature if sweater sales are at $1,200?

A.
–3°C

B.
0°C

C.
–4°C

D.
3°C