If a < 0, - 1 < B < 0, then the order of squares of a, AB, AB from small to large is

If a < 0, - 1 < B < 0, then the order of squares of a, AB, AB from small to large is

∵a<0,-1<b<0
∴ab>0,0<b²<1
∴a<ab²<0
∴a<ab²<ab