If ab + bc + ca = 0, then the value of \(\frac{{\left( {{b^2} - ca} \right)\left( {{c^2} - ab} \right) + \left( {{a^2} - bc} \right)\left( {{c^2} - ab} \right) + \left( {{a^2} - bc} \right)\left( {{b^2} - ca} \right)}}{{\left( {{a^2} - bc} \right)\left( {{b^2} - ca} \right)\left( {{c^2} - ab\;} \right)}}\) is

If ab + bc + ca = 0, then the value of \(\frac{{\left( {{b^2} - ca} \r

1.	If ab + bc + ca = 0, then the value of \(\frac{{\left( {{b^2} - ca} \right)\left( {{c^2} - ab} \right) + \left( {{a^2} - bc} \right)\left( {{c^2} - ab} \right) + \left( {{a^2} - bc} \right)\left( {{b^2} - ca} \right)}}{{\left( {{a^2} - bc} \right)\left( {{b^2} - ca} \right)\left( {{c^2} - ab\;} \right)}}\) is
A.	-1
B.	0
C.	1
D.	2
Answer» C. 1