Based on the table and the network below, what is the time variance of the project? $($The table respectively gives the expected times and variances for each activity in the columns Time and Var.$)$

a$.1\mathrm{.}2$

b$.3\mathrm{.}9$

c$.7$

d$.1\mathrm{.}8$

e$.2\mathrm{.}1$

f$.2$

g$.1\mathrm{.}9$