If necessary, complete Exercise $1.$ Use Windows to rename the Florist Solution folder to Florist Solution$-$Modified. Open the Florist Solution.sln file contained in the VB$9$E$\backslash$Chap$01\backslash$Florist Solution$-$Modified folder. If necessary, open the designer window. $($F$1\mathrm{.}4,$ F$1\mathrm{.}5,$ A$1\mathrm{.}3,$ A$1\mathrm{.}6$A$1\mathrm{.}12)$

a$.$ Change the name of the picture box that displays the hours to picHours.

b$.$ The picHours control should not be visible when the application is started and the interface appears on the screen; set the appropriate property.

c$.$ Unlock the controls and then modify the interface as shown in Figure $1-41.$ Change the buttons' names to btnShow and btnHide, and then lock the controls.

d$.$ Code the Show hours and Hide hours buttons. The Show hours button should display the picHours control when the button is clicked; the Hide hours button should hide the picHours control.

e$.$ Save the solution and then start the application. Test the buttons and then close the solution.