Is the given molecule antiaromatic, aromatic, or nonaromatic? If it is aromatic, what is its n in Hückel's rule? If not, why does it break the aromaticity rule?

• A. The molecule is aromatic. Its n is 1.
• B. The molecule is aromatic. Its n is 3.
• C. The molecule is antiaromatic. It breaks the aromaticity rule because it does not have a 4n + 2 number of π electrons.
• D. The molecule is nonaromatic. It breaks the aromaticity rule because it is not planar.

Answer: (A)