Identify the attack when an attacker by several trial and error can read the contents of a password file present in the restricted etc folder just by manipulating the URL in the browser as shown:

http://www.terabytes.com/process.php./../../../../etc/passwd

A. Directory Traversal Attack

B. SQL Injection Attack

C. Denial-of-Service Attack
D. Form Tampering Attack

Reference: https://doc.lagout.org/security/SQL%20Injection%20Attacks%20and%20Defense.pdf