The ionization isomer of ( ) ( ) 2 4 2 ⎡⎣Cr H O Cl NO ⎤⎦Cl is
(A) ( ) ( ) 2 4 2 2 ⎡⎣Cr H O O N ⎤⎦Cl (B) ( ) 2 4 2 2 [Cr H O Cl ](NO )
(C) ( ) ( ) 2 4 ⎡⎣Cr H O Cl ONO ⎤⎦Cl (D) ( ) 2 4 2 2 2 ⎡⎣Cr H O Cl (NO )⎤⎦ ⋅H O