Group rows with highest values

Hello. I can't find any solution to my problem. This is my table:
ID ZONE COUNT
0 A 6
1 A 10
2 A 10
3 B 3
4 B 2
5 B 3

I need to select and group only rows with the highest values in their zones.
Expected result:
ID ZONE COUNT
1 A 10
2 A 10
3 B 3
5 B 3
I would really appreciate it if someone can help me. I...

Group rows with highest values

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