UC Subject tests? Help!

How do the UC Schools require the subject tests to be sent? I want to send my best score out of one subject, but do I need to send the lower score for the same subject?
For example, I got an 800 in Math II Subject test my second attempt. First attempt, I scored a 720.
So would I have to send both, or can I just send the better of the two? (I’m a junior)
Thanks!

Bump?

UC’s want all test scores and will use the highest score.