The electronic configuration of the element which is just above the element with atomic number 43 in the same periodic group is
A. `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5)4s^(2)`
B. `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(5)`
C. `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(6)4s^(1)`
D. `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(1)4p^(6)`