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Priyanshu kumar Best Answer
Option C is correct Triphenylene has more resonance energy. First of all Anthracene (a) and phenanthrene (b) has less Resonance energy has molecule in option C and D as more ring(4 ring) is present in option c and d... Now triphenylen (c) has more resonance energy than molecule in option D because stability of triphenylene is more and also triphenylene has more aromatic character due to presence of three benzene like moeities at extreme ends. So overall option C is correct