7. Which mechanism is not part of the reason why a bond is in the status of "high energy"? (A) Electrostatic repulsion is relieved upon cleavage. (B) Products of its cleavage are unstable and tautomerizing to a more stable form. (C) The bond is very stable and requires large energy to cleave it. (D) The bond is strained. (E) Products of its cleavage are more resonance stabilized.