Which of the following is aromatic ?

Options

A.
B.
C.
D.

Answer

B

Explanation

Aromaticity can be predicted by the use of Huckle's rule which says that `(4n+2)pi` - electrons are required in delocalisation system to give it aromaticity.
`(4n +2)pi` electrons means 2,6, 10 ……… `pi` electrons Here total number of elctrons avaiable for delocalisation =6
`therefore ` It is expected to be aromatic.