The most accepted electronic configuration of f-block element is
A. `(n-2) s^(2), p^(6) , d^(10) , f(0-14), (n-1) s^(2), p^(6) d^(0-1) , ns^(0-2)`
B. `(n-2) s ^(2), p^(6), d^(10) , f^(1-14), (n-1) s ^(2),p^(6)d ^(0-1) , ns^(2)`
C. `(n-2) s^(2), p ^(6), d ^(10),f ^(0-14) , (n-1) s^(2), p ^(6)d^(1) , ns^(0-1)`
D. `(n-2) s ^(2), p^(6) , d^(10) , f^(0-14) , (n-1) s^(2), p ^(6)d^(1), ns^(2) `
