In preparation for receiving chilled reefer cargo, the reefer space has been precooled for over twenty-four hours. Loading may begin when the space has been cooled to a temperature between __________.

A
-10°F (-23°C) and +10°F (-12°C)
B
12°F (-11°C) and 20°F (-7°C)
C
28°F (-2°C) and 40°F ( 4°C)
D
42°F (6°C) and 55°F (13°C)
E