Classification of Elements and Periodicity in Properties

Which among the following electronic configurations belong to main-group elements?

A. $[\mathrm{Ne}]3{\mathrm{s}}^1$ · B. $[\mathrm{Ar}]3{\mathrm{d}}^{3}4{\mathrm{s}}^2$ · C. $[\mathrm{Kr}]4{\mathrm{d}}^{10}5{\mathrm{s}}^{2}5{\mathrm{p}}^5$ · D. $[\mathrm{Ar}]3{\mathrm{d}}^{10}4{\mathrm{s}}^1$ · E. $[\mathrm{Rn}]5{\mathrm{f}}^{0}6{\mathrm{d}}^{2}7{\mathrm{s}}^2$

Choose the correct answer from the options given below: