[" In the anion "HCOO" the two carbon-oxygen bonds are found "],[" to be of equal length.what is the reason for it? "],[" (a) The C = "O" bond is weaker than the C - O bond "],[" (b) The anion "HCOO^(-)" has two resonating structures "],[" (c) The anion is obtained by removal of a proton from the "],[" acid molecule "],[" (d) Electronic orbitals of carbon atom are hybridised "]