Look at the code below used to create Student objects and set some of their values. What gets printed to the screen when this code is executed?

Student harry, hermione, ron, luna; harry. setGpa$(3\mathrm{.}2)$;

hermiofe. setGpa$(4\mathrm{.}0)$;

ron. setGpa$(2\mathrm{.}7)$;

luna. setGpa$(3\mathrm{.}4)$;

cout $$ ron.getGpa$()$ endl;

$3\mathrm{.}2$

$3\mathrm{.}4$

$4\mathrm{.}0$

$2\mathrm{.}7$