Calculate the variance of the returns on a portfolio that is invested $40\%$ in Stock S and

$60\%$ in Stock T$?$

Select one:

a$.0\mathrm{.}00107$

b$.0\mathrm{.}00091$

c$.0\mathrm{.}00118$

d$.0\mathrm{.}00136$

e$.0\mathrm{.}00083$