* A. Debug logs can be set for specific users, classes, and triggers: * Debug logs can be configured for users, classes, and triggers by setting trace flags. * C. Only the 20 most recent debug logs for a user are kept: * Salesforce retains only the 20 most recent debug logs per user. Older logs are overwritten. * E. The maximum size of a debug log is 5 MB: * Debug logs are capped at 5 MB. If this limit is exceeded, logging stops for that transaction. * Why Not B and D? * B: Debug logs are retained for 7 days, not 24 hours. * D: Debug log levels are not cumulative. Each level is independent. * Debug Logs Documentation: https://help.salesforce.com/s/articleView?id=sf. code_add_users_debug_log.htm References: