If $$x$$ is an integer such that $$x +\frac{1}{x} = \frac{17}{4}$$, then the value of $$x - \frac{1}{x}$$:

A

$$\frac{13}{4}$$

B

$$\frac{15}{4}$$

C

$$\frac{17}{4}$$

D

$$\frac{19}{4}$$