Which compound in each set is aromatic? cycloheptatriene cycloheptatrienyl cation cycloheptatrienyl anioncyclopropene cyclopropenyl cation cyclopropenyl anion Explain your choice. Check all that apply. Compound can be aromatic if it is cyclic, nonplanar. Compound can be aromatic if it has four pairs of pi electrons. Compound can be aromatic if it has three pairs of pi electrons. Compound can be aromatic if it has one pair of pi electrons. Compound can be aromatic if it is cyclic, planar, every ring atom has a p orbital. Compound can be aromatic if it has two pairs of pi electrons.