Is the molecule below nonaromatic, antiaromatic, or aromatic? If the molecule is aromatic, calculate its n in Hückel’s rule. If not, identify which aromaticity rule it breaks.

• A. The molecule is nonaromatic. The molecule is not planar and does not have a fully conjugated π system.
• B. The molecule is aromatic. Its n is 3.
• C. The molecule is nonaromatic. It does not violate any aromaticity rule.
• D. The molecule is antiaromatic. It does not have 4n + 2 π electrons.

Answer: (D)