Hi all, I have a bit of problem, though it's good one to have. I conducted professors who do work in [my area of interest] asking if I could work with them over the summer. Several have responded affirmatively, though I can't, for geographic reasons, work with them all. The problem is, they are all people who I will likely apply to work with when I apply to grad school next year, and I'm worried that "turning them down" now will cause them to reject me next year. Advice?