If x = 3 + 2$$\sqrt 2 $$ and xy = 1, then the value of $$\frac{{{x^2} + 3xy + {y^2}}}{{{x^2} - 3xy + {y^2}}}$$is?

• A. $\frac{{30}}{{31}}$$
• B. $\frac{{70}}{{31}}$$
• C. $\frac{{35}}{{31}}$$
• D. $\frac{{37}}{{31}}$$