If x2+y2+z2 = xy + yz + zx, then the value of $${3x^4+7y^4+5z^4} over{5x^2y^2+7y^2z^2+3z^2x^2} $$ is

If x2+y2+z2 = xy + yz + zx, then the value of $${3x^4+7y^4+5z^4} over{

1.	If x2+y2+z2 = xy + yz + zx, then the value of $${3x^4+7y^4+5z^4} over{5x^2y^2+7y^2z^2+3z^2x^2} $$ is
A.	2
B.	1
C.	0
D.	-1
Answer» C. 0