$$0.\overline{23}$$​ is:

Correct option is C

Given:

$$0.\overline{23}$$

Concept Used:

​$$0.\overline {ab} =\frac{ab}{99}$$

Solution:

​$$0.\overline{23}$$ = $$\frac{23}{99}$$

Since, $$\frac{23}{99}$$ a rational number.

Thus, option (C) is right.