If it makes absolutely no difference to students and parents which school the applicant gets ED acceptance, then go for the best odds. That’s not the usual case. Someone in the picture is hoping for College A, maybe because of its lowest accept rate, and has twinges of disappointment and remorse when ED acceptance to college D with double the accept rate is now out of the picture. The “what if’s? start a-creeping. Which I’d fine, natural as long as they don’t get out of hand.
My youngest started out with 3 equal favorites. By the time apps were done, there was fortunately a clear favorite, and an EA school that came in with not only an acceptance but a big fat juicy merit award catapulted to second place. There was going to be no RD round if the ED school deferred to RD. It was game over by year end.