What is the value of average after the following code executes?

double average;

average $=1\mathrm{.}0+2\mathrm{.}0+\frac{3\mathrm{.}0}{3\mathrm{.}0}$

$4\mathrm{.}0$

$2\mathrm{.}0$

$1\mathrm{.}0$

$3\mathrm{.}0$

Compile Error