Something broke the central leader of my Rainbow eucalyptus tree.

It was planted October 2021. At the time it was 6 feet tall, then a year later about 10 feet tall, then two weeks ago back to 7 feet tall because something happened to it the leader just broke off, don't know if it's wind or what that caused it. Here you can see the entire leader section just hanging upside down.

I removed the broken leader. Here is a close up image.

I have annotated the branches near the top as A, B1/B2, C, D. I hope I can get some advice on how to remedy this.

Should I make a new smooth cut at the top and remove branch A as well?

Should I remove B1 & B2 also?

Should I just leave it alone for a while and see what happens?

Something else?