When using a custom Magento logo as the default logo for transactional emails; which of the following is the correct way for the logo to be maintained even after Magento system upgrades?

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1
  • Replace the logo in the base theme skin directory.
  • Create a new theme and replace the new logo in the skin directory.
  • Update the logo in all transactional emails.
  • Create a new theme and place the new logo, named as “logo_email.png”, in the skin directory.

Тупой индус взял вопрос отсюда: stackoverflow.com/a/5985463
Причём правильным является ответ 2, но тупой индус наверняка думает, что это 4.