If 3x+y = 81 and 81x-y = 3, then the value of $$\frac{x}{y}$$ is = ?

• A. $\frac{{15}}{{17}}$$
• B. $\frac{{17}}{{30}}$$
• C. $\frac{{15}}{{34}}$$
• D. $\frac{{17}}{{15}}$$