An aggregate sample weighs $500$ g $.$ After oven$-$drying, it weighs $480$ g $.$ The weight of the empty container is $50$ g $.$ What is the moisture content of the aggregate?

a$.6\mathrm{.}3\%$

b$.5\mathrm{.}2\%$

c$.3\mathrm{.}8\%$

d$.4\mathrm{.}8\%$

e$.4\mathrm{.}4\%$