Send only one SAT II score?

Hello,
I am an international student applying to some American colleges.
Most colleges I apply to do not require the SAT subject test.
However, one college stated on their website that two subject tests are recommended but not required.
I have taken two subject tests (Biology and Math II) and scored 710 and 520 respectively.
I know that sending the Math score would probably completely destroy my chances of being admitted so I am wondering if sending only the fairly good biology score would be better than sending both scores.
Thank you in advance.

I’m of the opinion that one either sends 2 or none. Sending one would seem to indicate that an applicant is trying to hide a bad score (which you are). Nobody (well, very, very few students only take one Subject Test.

@Kat1998xD

Use score choice to send the good subject score to this school.