Which of the following prove that (-9)(4) = -36?

A
If I lost 9 dollars, then gained 4 dollars, I lost 36 dollars.

B
If I lost 9 pounds, then ate 4 pounds of turkey, I lost 36 pounds.

C
If I lost 9 pounds every month for 4 months in a row, then I lost 36 pounds.

D
If the temperature is -9 degrees outside and I light a fire 4 times, then the temperature will be -36.