Choose the correct option having all the elements with d ^ 10...

Electronic Configuration is the distribution of electrons in the various available orbitals of an atom of an element. 

The mentioned elements are present in d-block.

$[ Cr ] = [ Ar ] 4{s}^{1}3{d}^{5}$

$[ Cd ] = [ Kr ] 5{s}^{2}4{d}^{10}$

$[ Cu ] = [ Ar ] 4{s}^{1}3{d}^{10}$

$[ Ag ] = [ Kr ] 5{s}^{1}4{d}^{10}$

$[ Zn ] = [ Ar ] 4{s}^{2}3{d}^{10}$

Hence, the answer is B.