The value of $$\frac{1}{15}+\frac{1}{85}+\frac{1}{63}+\frac{1}{99}+\frac{1}{143}$$ is

A

$$\frac{5}{39}$$

B

$$\frac{4}{39}$$

C

$$\frac{2}{39}$$

D

$$\frac{7}{39}$$