True or False: The standard banner size supported by YouTube is 300×250.

A) True
B) False

The correct answer is:

True

Explanation: YouTube In-video overlay ads are 480×70 image ads that appear overlaid on the bottom of the YouTube video player on the YouTube watch pages. The overlay ad appears when a user initiates video play. You can optionally include a 300×250 companion display ad.
Read more here: https://support.google.com/displayspecs/answer/187095