If the 9-digit number 72 $$x$$ 843 1 y 4 is divisible by 36, what is the value of $$\left(\frac{x}{y}-\frac{y}{x}\right)$$

A

$$1\frac{5}{7}$$

B

$$2\frac{1}{10}$$

C

$$1\frac{2}{5}$$

D

$$2\frac{9}{10}$$