Which of the following features makes this possible?

SNMP is a protocol used to query hosts, servers, and devices about performance or health status data. Hackers have used this protocol for a long time to gather great amount of information about remote hosts. Which of the following features makes this possible?

A.
It uses TCP as the underlying protocol

B.
It uses a community string sent as clear text

C.
It is susceptible to sniffing

D.
It is used by ALL devices on the market

Explanation:
SNMP uses UDP, not TCP, and even though many devices uses SNMP not ALL devices use it and it can be disabled on most of the devices that does use it. However SNMP is susceptible to sniffing and the community string (which can be said acts as a password) is sent in clear text.