A zone file consists of which of the following Resource Records (RRs)?

A.
DNS, NS, AXFR, and MX records

B.
DNS, NS, PTR, and MX records

C.
SOA, NS, AXFR, and MX records

D.
SOA, NS, A, and MX records

Explanation:
The zone file typically contains the following records:

SOA Start Of Authority
NS Name Server record
MX Mail eXchange record
A Address record