Refer to the exhibit. A developer needs to create a process to allow the ScanPlus end users
to manipulate the tree structure. At which level should the steps be triggered to avoid
unforseen triggering results while still enhancing each page?

A.
ScanPlus @7, IE @7

B.
ScanPlus @0, IE @0

C.
ScanPlus @7, IE @0

D.
ScanPlus @0, IE @7

Explanation: