Iodoform gives yellow ppt. with aq. `AgNO_(3)` on heating but chloroform doesnot give any ppt. because
A. C-I bond in iodoform is weaker than C-Cl bond of chloroform
B. Iodoform is covalent, chloroform is ionic
C. Iodoform is highly unstable, chloroform is highly stable
D. None of the above