Consider the anion below, which is a resonance hybrid. Only one important resonance structure is given – each additional important resonance structure only has one atom with a nonzero formal charge. Several of the carbon atoms in the given resonance structure are labeled. Which of these carbon atoms has a negative formal charge on it in any of the additional important resonance structures that are not shown? Pick the one choice below which best answers this question.
A. I only
B. II only
C. III only
D. IV only
E. I and III
F. II and IV
G. I and II
H. III and IV
I. I, II, III, and IV
J. None of these
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