A person borrowed some money for simple interest and the interest paid ti $$\frac{4}{9}th$$  of the principal. If the magnitudes of the interest rate and the time period are equal, then the rate of interest per annum is

A

$$6\frac{2}{3}$$%

B

$$8\frac{1}{3}$$%

C

$$12\frac{1}{2}$$%

D

$$16\frac{2}{3}$$%