The coordination number of a central metal atom in a complex(s) is//are not determined by
A. a.The number of anionic ligands bonded to the metal ion
B. b.The number of ligands around metal ion bonded by pi-bonds
C. c.The number of ligands around a metal ion bonded by both pi and o-bonds
D. d.The number of ligands around a metal ion bonded by o-bonds
