If a > b and c < 0, then:

Select one:
a. ac > bc
b. a/c>b/c
c. ac < bc
d. None of the above

I have no idea how to answer this questions because there aren't any numbers!

(c)

because multiplying or dividing by a negative value changes the direction of the inequality

6 > 3
6(-4) = -24 < -12 = 3(-4)