University of Washington Testing Policy

Hi,

I have taken both the ACT and SAT twice. On the University of Washington’s application I listed I only took the ACT. I read that they require all SAT scores to be sent. Is this still the case if I decided to go for ACT? Is there a way they can check whether I’ve taken the SAT too or is it really my choice which test to send even if I’ve taken both. My understanding is that you can choose which test, but then have to send all scores from that particular test?

Thanks a lot.