Which product is negative?

−2⋅(−7)⋅12⋅(4)

4⋅(−9)⋅(−3)⋅(−1)

−6⋅(−7)⋅(−8)⋅0

−3⋅(−2)⋅(−4)⋅(−7) ( plz help me)