Clark, a Professional Hacker, Decided to Bring Down the Services

Clark, a professional hacker, decided to bring down the services provided by the target organization. In the initial information-gathering stage, he detected some vulnerabilities in the TCP/IP protocol stack of the victim's system. He exploited these vulnerabilities to create multiple malformed packets in ample magnitude and has sent these unusually crafted packets to the victim's machine. Identify the type of attack being performed by Clark?

A) Dictionary attack
B) DoS attack
C) SNMP brute-forcing attack
D) ARP attack