Correct Answer: A
Solution :According to Huckel rule for aromaticity the molecule must be planar, cyclic system having delocalised (4n + 2)p electron where n is an integer equal to 0, 1, 2, 3, thus the aromatic comp. have delocalised electron cloud of 2, 6, 10 or 14p electron cyclopropenyl cation have the 2p electron (n = 0) so it is aromatic.
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