A. Events indexes store data in uncompressed form, while metrics indexes store data in compressed form.

B. Events indexes impose minimal structure and can accommodate any kind of data, while metrics indexes use a highly structured format to handle metrics data.

C. Events indexes store data in compressed form, while metrics indexes store data in uncompressed form.

D. Events indexes use a highly structured format to handle event-based log data, while metrics indexes impose minimal structure and can accommodate any kind of data.