Which of the following needs to be edited to input and display the order attributes in Magento?

Upwork «Magento» Upwork test
1
  • /app/design/adminhtml/default/default/template/sales/order/view/info.phtml
  • /app/design/adminhtml/default/default/template/salesext/edit_form.phtml
  • /app/code/local/CWACI/SalesExt/controllers/Adminhtml/Sales/OrderController.php
  • Both /app/design/adminhtml/default/default/template/sales/order/view/info.phtml and /app/code/local/CWACI/SalesExt/controllers/Adminhtml/Sales/OrderController.php

Тупой индус взял вопрос отсюда: stackoverflow.com/a/14617712
Причём там в ответе упомянуты все 3 файла.