An investment earned the following returns for the years $2013$ through $2016$:$20\%,-5\%,30\%,$ and $10\%.$ What is the variance of returns for this investment?

Select one:

a$.0\mathrm{.}2987$

b$.0\mathrm{.}0892$

c$.0\mathrm{.}0223$

d$.0\mathrm{.}1292$

e$.0\mathrm{.}0292$