My experience with oversubscribed majors is limited to nursing. The state school with a nursing program does D. A handful of direct admits and then competitive for others. My employer does B. I think I’d select one of these options.
After 25 years working with freshman, I can’t say I would be a fan of either A or C because they do not allow students who don’t declare at the get-go to move into the major. First years change their minds… A LOT. And I’m not talking from a statistics standpoint or a parent who knows her own kids and some of their friends (really small samples). I’ve seen a lot of real live freshmen over the years. A and C keep good students out of programs, although there are some administrative advantages.