Exam UiARD topic 8 question 134 discussion

Actual exam question from UiPath 's UiARD

Question #: 134
Topic #: 8

A developer created a workflow that extracts the invoice number for different order IDs in a web application. The following selector represents the selector structure for a 6-digit order ID 123456.
<html app='chrome.exe' title='ACME Accounts System - Invoice - 123456 '/>
<webctrl tag-'DIV' aaname='123456' class='InvoiceNumber' />
Assume only the order ID value changes in the selector and there is a defined list of 6-digit order IDs.
The developer needs to fine-tune the selector to work only for a pre-selected list of order IDs. What represents an example of a good selector?