The denominator of a rational number exceeds its numerator by 10. If the numerator is increased by 4 and the denominator is reduced by 3, the number obtained is $$\frac{5}{6}$$. The original rational number is 

A

$$\frac{11}{21}$$

B

$$\frac{7}{17}$$

C

$$\frac{9}{19}$$

D

$$\frac{13}{23}$$