Determine What Signs on Values of X and Y Would $- 45$

Multiple Choice

Determine what signs on values of x and y would make the statement true. Assume that x and y are not 0.
-Find the magnitude of the difference between a windchill factor of 82 and a windchill factor of $- 45$ .

A) 37
B) 127
C) $- 37$
D) $- 127$