The pair having the same magnetic moment is
[at. No. `Cr = 24, Mn = 25, Fe = 26 " and " Co = 27]`
A. `[Cr(H_(2)O)_(6)]^(2+) and [Fe(H_(2)O)_(6)]^(2+)`
B. `[Mn(H_(2)O)_(6)]^(2+) and [Cr(H_(2)O)_(6)]^(2+`
C. `["CoCl"_(4)]^(2-) and [Fe(H_(2)O)_(6)]^(2+)`
D. `[Cr(H_(2)O)_(6)]^(2+) and ["CoCl"_(4)]^(2-)`
