The correct order of the stoichiometries of $AgCl$ formed when $AgNO_3$ in excess is treated with the complexes : $CoCl_3.6NH_3, CoCl_3.5NH_3, CoCl_3.4NH_3$ respectively is -

Question

( A ) $1AgCl, 3AgCl, 2 AgCl$
( B ) $3AgCl, 1AgCl, 2 AgCl$
( C ) $3AgCl, 2AgCl, 1 AgCl$
( D ) $2AgCl, 3AgCl, 1 AgCl$