UC SAT Subject test

If you fulfill the recommended sat subject for a UC school e.g. A math and science, but you also took a test from a different subject and didn’t like that score do you have to submit it? Or just go with the math and science one? For UCs

My understanding of the SAT subject tests is that they can only help you, not hurt you so send them all as required by the UC’s.
From the UC Website:

In the College Board’s Score Choice module, ensure that all scores are sent to UC.

Is that last quote referring to SATs or Subject tests as well? @Gumbymom

My understanding is that the UC’s want all test scores, ACT/SAT and SAT II and for the SAT/ACT, they will take the highest score from one sitting.