Select correct order about stability of cations

Options

A. `Ge^(4+) gt Sn^(4+) gt Pb^(4+)`
B. `Ge^(2+) gt Pb^(4+) lt Pb^(2+)`
C. `Pb^(2+) gt Pb^(4+), Sn^(4+) gt Sn^(2+)`
D. All are correct statements

Answer

D