Lets be $$16\frac{2}{3}\%$$ of 24, t be $$33\frac{1}{3}\%$$ of 9 and u be 20% of 25. If s, t and u are the sides of a triangle, the angle opposite to the side of length u is:

A

$$30^\circ$$

B

$$45^\circ$$

C

$$60^\circ$$

D

$$90^\circ$$