For Resonance Forms of a Molecule or Ion

Multiple Choice

For resonance forms of a molecule or ion, .

A) there cannot be more than two resonance structures for a given species
B) the observed structure is an average of the resonance forms
C) all the resonance structures are observed in various proportions
D) the same atoms need not be bonded to each other in all resonance forms
E) one always corresponds to the observed structure