...... are often delivered to a PC through an mail attachment and are often designed to do harm. [IBPS PO 2015]

Other than those given as options

...... are often delivered to a PC through an mail attachment and are

1.	...... are often delivered to a PC through an mail attachment and are often designed to do harm. [IBPS PO 2015]
A.	Portals
B.	Spam
C.	Viruses
D.	Other than those given as options
E.	E-mail messages
Answer» D. Other than those given as options