Which of the following set of species are  diamagnetic?

Sulfur exists as the gaseous form ${\mathrm{S}}_2$, which has two unpaired electrons in an anti-bonding atomic structure similar to that of ${\mathrm{O}}_2$. It has a magnetic field.
Sulfur exists in a gaseous state, designated ${\mathrm{S}}_8$, which is diamagnetic. Additionally diamagnetic is ${\mathrm{S}}_6$.

${\mathrm{S}}_3,{\mathrm{S}}_6$ and ${\mathrm{S}}_8$ all are diamagnetic.