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Select the statement that is not true about the carboxylic acid and amide functional groups and their infrared absorptions.

(A) When either of these functional groups absorbs infrared radiation, the excitation of an electron to an anti-bonding orbital is not occurring.

(B) The carboxylic acid absorbs higher energy infrared radiation.

(C) The difference in infrared absorptions of the different carbonyl groups (C=O) is consistent with the amide group having the stronger C=O bond.

(D) The absorption of infrared radiation by the C=O group causes the carbon and oxygen atoms to vibrate with an increased amplitude.

(E) The infrared absorptions of carboxylic acid and amide functional groups can be used to indicate the presence of these functional groups in organic molecules.

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