EXPLANATION
Let's see the facts:
°F -----> °C (What we need to do)
Steps:
1) Subtract 32, so we must do it with the °F as following:
F - 32
2) Multiply by 5/9, so we must do it with the (F - 32) as following:
(F - 32)*(5/9)
The formula that can be used to change from Fahrenheit to Celsius is:
C = 5/9(F - 32) [OPTION D]