answer should be B&C

Logging of Data Loss Prevention Scanning The access logs show whether an upload request was scanned by either the Cisco Data Security filters or an external DLP server. The access log entries include a field for the Cisco Data Security scan verdict and another field for the External DLP scan verdict based. In addition to the access logs, the Web Security appliance provides the following log file types to troubleshoot Cisco Data Security and External DLP Policies: Data Security Logs. Records client history for upload requests that are evaluated by the Cisco Data Security filters. Data Security Module Logs. Records messages related to the Cisco Data Security filters. Default Proxy Logs. In addition to recording errors related to the Web Proxy, the default proxy logs include messages related to connecting to external DLP servers. This lets you troubleshoot connectivity or integration problems with external DLP servers.

Selected Answer: BC Option B (Data Security): The Data Security Logs specifically capture client history, upload requests, and policy compliance verdicts evaluated by the local Cisco Data Security Filters. (A companion log type, the Data Security Module Logs, handles internal system filter messages) Option C (Default Proxy): The Default Proxy Logs capture standard web proxy transactions, but they are also uniquely responsible for logging errors related to connecting to external DLP servers. This is the log an administrator uses to troubleshoot ICAP connectivity, handshake errors, or integration timeouts with third-party DLP systems