Which of the following is incorrectly matched?

Options

A. `{:("Complex","Number of unpaired electrons"),({FeF_(6)]^(3-),5):}`
B. `{:("Complex","Number of unpaired electrons"),([Cr(en)_(3)]^(2+),2):}`
C. `{:("Complex","Number of unpaired electrons"),([Co(NH_(3))_(6)]^(3+),4):}`
D. `{:("Complex","Number of unpaired electrons"),({Mn(H_(2)O)_(6)]^(2+),5):}`

Answer

C