Bài giải:

$D=\frac{4}{9}:\left( \frac{1}{15}-\frac{2}{3} \right)+\frac{4}{9}:\left( \frac{1}{11}-\frac{5}{22} \right)$

=$\frac{4}{9}:\left( \frac{1}{15}-\frac{10}{15} \right)+\frac{4}{9}:\left( \frac{2}{22}-\frac{5}{22} \right)$

=$\frac{4}{9}:\frac{-3}{5}+\frac{4}{9}:\frac{-3}{22}$

=$\frac{4}{9}.\frac{-5}{3}+\frac{4}{9}.\frac{-22}{3}$

=$\frac{4}{9}.\left( \frac{-5}{3}+\frac{-22}{3} \right)$

=$\frac{4}{9}.\frac{-27}{3}$

= -4

Đáp án đúng là B