Which product is negative?

4⋅ (-9) ⋅ (-3) ⋅ (-1)

-2⋅ (-7) ⋅12⋅ (4)

-6⋅ (-7) ⋅ (-8) ⋅0

-3⋅ (-2) ⋅ (-4) ⋅ (-7)

4• (-9) • (-3) • (-1) is negative. Here's how:

4• (-9) • (-3) • (-1)

(-36) • (3) = - 108

-2• (-7) •12• (4)

14•48 = 672

-6• (-7) • (-8) •0

42• (0) = 0

-3• (-2) • (-4) • (-7)

6•28 = 168