29. Which of the following statements concerning resonance and inductive effects is false? (A) π-bond is generally involved in resonance. (B) Inductive effect normally goes through σ-bond. (C) CH₃O group in CH₃OCH₂CH₂CO₂H is an electron-donating group. (D) CH₃CO₂⁺ is more stable than CH₃CH₂⁺ because of resonance. (E) m-Methoxybenzoic acid is more acidic than benzoic acid because of inductive effect.