In this exercise, you modify one of the Seminars applications from Chapter $4\text{'}$s Apply lesson. Open the Seminars Solution.sln file contained in the VB$9$e$\backslash$Chap$06\backslash$Seminars Solution$-$CheckBox folder. Create an event$-$handling Sub procedure named ClearAmountDue and associate it with each check box's CheckChanged event. Then, create a function that determines which $($if any$)$ check boxes are selected and then adds the associated fee to the total due. The function should return the total due to the statement that invoked it$.$ Also, make the necessary modifications to the btnCalc$\_$Click procedure's code. Save the solution and then start and test the application. $($F$6\mathrm{.}1,$ F$6\mathrm{.}3,$ F$6\mathrm{.}5,$ A$6\mathrm{.}4,$ A$6\mathrm{.}5,$ A$6\mathrm{.}7)$