Accordion – parent url functionality

Which method provides for a better UX with a bootstrap accordion menu?

1) The parent 1 menu item’s href becomes active once the accordion is open.

  • parent 1 (header)
  • child 1
  • child 2

2) Copy parent 1 as an accordion menu item

  • parent 1 (header)
  • parent 1
  • child 1
  • child 2