Which of the following E,Z designations are correct, and which are incorrect? (a) CH3 (b) H CH2CH=CH2 c=C CO2H C=C H3C CH2CH(CH3)2 H E (c) Br (d) CH3 CH2NH2 C=C NC C=C H CH2NHCH3 (CH3)2NCH2 CH2CH3 E (e) Br c=C CO2H HOCH2 C=C (f) H CH3OCH2 COCH3 E

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