The self$-$employment tax rate is $15\mathrm{.}3\%.$ What is included in self$-$employment tax?

FUTA and SUTA tax on net income from self$-$employment.

Social security tax and FUTA tax on net income from self$-$employment.

Social security tax and medicare tax on gross income from self$-$employment.

Social security tax and medicare tax on net income from self$-$employment.