Quincy Runs the L0phcrack Tool Which Has a Feature That

Multiple Choice

Quincy runs the L0phcrack tool which has a feature that sniffs SMB passwords and stores them for offline cracking. He tries for hours and picks up nothing.
What could be the reason?

A) L0phtcrack does not do this, he needs to use 0phtcrack
B) He is sniffing on a segment that is using only IP Security Traffic in ESP mode
C) He is sniffing on a fiber optic network
D) His network interface is in promiscuous mode