Which product is negative?

−2 x (−7) x 12 x (4)

4 x (−9) x (−3) x (−1)

−6 x (−7) x (−8) x 0

−3 x (−2) x (−4) x (−7)

Respuesta :

a) 672
b) -108
c) 0
d) 168

The answer is 4×(-9)×(-3)×(-1) because the last answer for this is -108.