Apex domains cannot have CNAME records.
Question and response
Question
dig multi-mfoodcorp.com. NS
Answer
multi-mfoodcorp.com. 5 NS cns2.hostgator.com.
multi-mfoodcorp.com. 5 NS cns1.hostgator.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0