What is Android's 'StrictMode' and how is it useful as a security tool during development?

• A.StrictMode is an SELinux policy enforcement tool that activates additional MAC rules during development builds to simulate a production security environment
• B.StrictMode is an Android security mode that prevents apps from accessing external storage and forces all file operations to use internal storage exclusively
• C.StrictMode detects policy violations at runtime - including cleartext HTTP traffic, unencrypted disk operations, and leaked open resources - and can crash the app or log a stack trace, allowing developers to catch data exposure bugs before production
• D.StrictMode is a Play Store pre-submission scanner that checks APKs for OWASP Mobile Top 10 violations before they are published