Which mixture of the solutions will lead to the formation of negatively charged colloidal $$[AgI]I^-$$ sol. ?

A

50 mL of 1 M $$AgNO_3$$ + 50 mL of 2 M KI

B

50 mL of 2 M $$AgNO_3$$ + 50 mL of 1.5 M KI

C

50 mL of 0. 1 M $$AgNO_3$$ + 50 mL of 0.1 M KI

D

50 mL of 1 M $$AgNO_3$$ + 50 mL of 1.5 M KI