You have a “custom/default” design package. You need to edit this file:
/app/design/frontend/base/defauIt/template/page/html/header.Phtml
Which method is a bad practice because the file will be overwritten during Magento upgrades?

A.
Edit the “base/default” file directly.

B.
Create a new module in “base/default” called “custom” and copy the file there for editing.

C.
Create a new package called “custom/custom” and copy the file there for editing.

D.
Copy the file to “custom/default” for editing.