Just received a failing grade, should I still send SIR?

Hello,

I had been admitted to Merced and Riverside, but I just got my grades for my spring semester which ended last week, and I got a D in physics, B in the other two classes. The deadline to SIR is tomorrow, so my question is do I notify the two UCs about this and not SIR, or can I SIR to both, or pick only one to SIR to. I really am lost on what to do any advice would tremendously helpful, thank you!

http://talk.collegeconfidential.com/uc-transfers/