Which is aromatic species?

[Step 1]:Conditions for aromaticity i) Planar conjugatedii) Cycliciii) Obey’s Huckel’s rule  i.e (4n+2)πe-[Step 2]:Option (1) Benzene    is planar conjugated, cyclic and contains 6πe-.Therefore it is an aromatic compound[Step 3]:Option (2)  is not obeys Huckel’s rule[Step 4]:Option (3) Butene-1  CH3−CH2−CH=CH2 andOption (4) CH3CH2CH3  are not a cyclic compound.