Use the information you have learned in this lesson to help you choose the best answer about the mineral pyrite. Pyrite is a mineral which is made from iron and sulfur atoms. Choose all of the statements which are correct

The smallest unit of pyrite is a sulfur or iron atom.
The smallest unit of pyrite is a molecule containing iron and sulfur.
all of the above
The element called sulfur is made of sulfur atoms.

If there is more than one, say them