If $$x^{2} +y^{2} +z^{2} =xy+yz+zx$$ and x=1, then find the value of $$\frac{10x^{4} +5y^{4} +7z^{4}}{13x^{2}y^{2} +6y^{2}z^{2} +3z^{2}x^{2}}$$

A

2

B

0

C

-1

D

1