The correct code for stability, of oxidation states for given cations is:
(i) `Pb^(2+) gt Pb^(4+) ,Tl^(+) lt Tl^(3+)`
(ii) `Bi^(3+) lt Sb^(3+) , Sn^(3+) lt Sn^(4+)`
(iii) `Pb^(3+) gt Pb^(4+),Bi^(3+) gt Bi^(3+)`
(iv) `Tl^(3+) lt ln^(3+), Sn^(2+) gt Sn^(4+)`
(v) `Sn^(2+) lt Pb^(2+) , Sn^(4+) gt Pb^(4+)`
(vi) `Sn^(2+) lt Pb^(2+), Sn^(4+) lt Pb^(4+)`

Options

A. V and VI
B. I, III and VI
C. III and V
D. II and IV

Answer

C