Câu 23: 312-49V10: Computer Hacking Forensic Investigator

During an investigation of an XSS attack, the investigator comes across the term `[a-zA-Z0-9\%]+` in analyzed evidence details. What is the expression used for?

1. A. Checks for upper and lower-case alphanumeric string inside the tag, or its hex representation — đáp án hiện tại
2. B. Checks for forward slash used in HTML closing tags, its hex or double-encoded hex equivalent
3. C. Checks for opening angle bracket, its hex or double-encoded hex equivalent
4. D. Checks for closing angle bracket, hex or double-encoded hex equivalent