hich of the following is aromatic?

A line$-$angle structure shows a six$-$membered chain consisting of a line terminus, a segment of four vertices, and a line terminus. The chain contains alternating double and single bonds so that there are three double and two single bonds. A line$-$angle structure shows a ring with three vertices, with a double bond between the first and the second vertices, and with a positive charge at the third vertex.

A line$-$angle structure shows a ring with six vertices, with a double bond between the first and the second $($clockwise$)$ and between the third and the fourth vertices, and with a lone pair and a negative charge at the fifth vertex. A line$-$angle structure shows a ring with five vertices, with a double bond between the first and the second $($clockwise$)$ and between the third and the fourth vertices, and with a positive charge at the fifth vertex.

A line$-$angle structure shows a ring with four vertices and with a double bond between the first and the second $($clockwise$)$ and between the third and the fourth vertices.

I

II

III

IV

V