In the given series one word/one term/one number is missing. Select the correct alternative from the given ones that will complete the series.
$$2.5, \frac{13}{6}, \frac{11}{6}, ............, \frac{7}{6}$$

A

2

B

$$\frac{5}{3}$$

C

1.5

D

$$\frac{4}{3}$$