If an Application Is Storing Hourly Log Files from Thousands

Multiple Choice

If an application is storing hourly log files from thousands of instances from a high traffic web site, which naming scheme would give optimal performance on S3?

A) Sequential
B) instanceID_log-HH-DD-MM-YYYY
C) instanceID_log-YYYY-MM-DD-HH
D) HH-DD-MM-YYYY-log_instanceID
E) YYYY-MM-DD-HH-log_instanceID