Let's say that there is an event scheduled to take part in the near future and I would like to express that I think that it really shouldn't. Which one is correct:

A: I wonder whether it'll take place. I'd prefer it didn't, because of the virus.

B: I wonder whether it'll take place. I'd prefer it won't, because of the virus.

Based on my gut feel and this question I'd say that A is correct.

Are there any circumstances in which B would be correct? If I was talking about past event instead, I'd say "I'd prefer it hadn't happened"?