If a > b and c < 0, then:

a. ac > bc
b. a/c > b/c (incorrect)
c. ac < bc
d. none of the above

C.)
We can substitute numbers for the variables to make them true. We'll have a=2, b=1, and c=-1. We see that 2(-1) > 1(-1) is false since -2 is not greater than -2, so B is incorrect. However, when we do 2(-1) < 1(-1), this is true since -2 is less than -1, so C is correct. Hope this helps!

:)