Which of the following statements about the Diels-Alder reaction is true?
A) The diene can react only when it adopts the s-trans conformation.
B) Electron-withdrawing substituents in the diene increase reaction rate.
C) Electron-donating substituents in the dienophile increase the reaction rate.
D) The stereochemistry of the dienophile is retained in the product.
Correct Answer:
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