How To Find Your Site Encoding For Your Google Adsense Search Code

Frankly, I have no idea what site encoding is for. But you need to know this info when you’re setting up Google Adsense for Search to get the HTML codes to be put in your site.
If you don’t select the correct option, your Google Search could not work properly.

After searching, I found the answer in Google Adsense Help.
Here is how to find out what your site encoding.