Match the role in the left column with its correct description in the right column.

Roles		Description
a	Sender	i	The person who reads and responds to email messages.
b	Receiver	ii	The route an email message takes from the sender to the receiver.
c	Mail Relay	iii	The person who creates and sends an email.
d	Mail Gateway	iv	A server that passes email from one server to another.
e	Mailbox	v	A storage location where incoming messages are held until they are retrieved by the email client.