You discover an unpatched Android permission-handling vulnerability on a device with fully updated antivirus software.

The CEH Mobile Platform Security module explains that mobile antivirus solutions rely heavily on signatures and known exploit patterns. A custom exploit with obfuscation is far more likely to bypass detection.

CEH explicitly teaches that:

Zero-day or unpatched vulnerabilities

Custom, obfuscated payloads

Minimal use of known frameworks

are the most effective for bypassing endpoint defenses during controlled testing.

Option A is correct.

Options B and C are easily detected.

Option D is social engineering, not a technical exploit.