Which one of the following tools the hacker probably used to inject HTML code?

An attacker, using a rogue wireless AP, performed an MITM attack and injected an HTML code to embed a malicious applet in all HTTP connections. When users accessed any page, the applet ran and exploited many machines.

Which one of the following tools the hacker probably used to inject HTML code?
A . Wireshark
B . Ettercap
C . Aircrack-ng
D . Tcpdump

Answer: B