Is there a limit on the size of the string you can pass to the prompt arg of InputBox? For some reason it is not displaying the last line of my menu. MsgBox works fine

Dim Answer2 as Varian
Dim HelpMenu As Strin
HelpMenu = vbCr & "1. Introduction" & vbCr & "2. Summary Pages"
& vbCr & "3. Store Pages" & vbCr & "4. Adding New Products/Stores"
& vbCr & "5. Exit
MsgBox HelpMenu 'this displays as expecte
Answer2 = Application.InputBox(Title:="Menu", prompt:="Enter the number of a "
& "menu item below." & HelpMenu
'this only displays the first 4 lines of HelpMenu. Option 5 doesn't appear, but I can still choose
'it and the code operates correctl

What am I missing here?