If the points `((a^3)/((a-1))),(((a^2-3))/((a-1))),((b^3)/(b-1)),((b^2-3)/((b-1)))`,`((c^3)/(c-1))` and `(((c^2-3))/((c-1))),` where `a , b , c` are different from 1, lie on the `l x+m y+n=0` , then (a) `a+b+c=-m/l` (b)`a b+b c+c a=n/l` (c)`a b c=((m+n))/l` (d)`a b c-(b c+c a+a b)+3(a+b+c)=0`