Asap which product is negative?

−3⋅5⋅(−6)⋅4

−7⋅(−3)⋅(−9)⋅0

−4⋅(−6)⋅(−3)⋅(−5)

−3⋅4⋅(−2)⋅(−7)

The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)