$8.$ What does the SRV $($Service$)$ record do in a DNS $($Domain Name System$)$ zone?

a$.$

Allows DNS clients to request the address of a server that provides a specific service instead of querying the server by name.

b$.$

It identifies the authoritative name server for a domain.

c$.$

It identifies the e$-$mail server to be used for e$-$mail traffic for the domain.

d$.$

It holds the alternative names for a host.