which-of-the-following-correctly-describes-benzofurane-and-benzothiophene

Question

Which of the following correctly describes Benzofurane and Benzothiophene?

Accepted Answer

Both incorporate benzene rings and are related to simpler heterocycles.

Answer

Both are heterocycles without benzene rings.

Answer

Only Benzothiophene incorporates a benzene ring.

Answer

Only Benzofurane incorporates a benzene ring.