Simplify: (\large\frac{4}{7} + \large\frac{-8}{9} + \large\frac{-5}{21} + \large\frac{1}{3})

Question

( A ) \large\frac{-2}{9}
( B ) None of these
( C ) \large\frac{1}{9}
( D ) \large\frac{2}{9}