A refrigeration system at your company uses temperature sensors fixed to read Celsius (°C) values, but
the system operators in your control room understand
only the Fahrenheit scale. You have been asked to make
a Fahrenheit (°F) label for the high temperature alarm,
which is set to ring whenever the system temperature
rises above -10°C. What Fahrenheit value should you
write on the label?
A-50°F
B -23°F
C -18°F
D 14°F
E 26°F