On one day, the temperature outside did not get above 6°F. Which number line represents the possible temperatures that day?
A) -10°F -----0°F ----- 6°F ----- 10°F -----20°F
B) -5°F ----- 0°F ----- 5°F ----- 10°F -----15°F
C) 0°F ----- 2°F ----- 4°F ----- 6°F -----8°F
D) -8°F ----- -4°F ----- 0°F ----- 4°F -----8°F