Heh, I don't remember it either, but I think it's O.
I have swelled up from mosquito bites on my arms and legs. It looked like I had a mini hill on my arm.
I should know my blood type by now but i don't anymore, lost the paper I had it written on. I always forget to ask the doctor too.
Supposedly mosquitoes prefer blood type O which is the most common blood type.
I am O+. Don't know if that's true or not, but here's this:
Mosquito Magnets: Who/What Attracts Mosquitoes?