BIND question

[praveen]

All,
Operating BIND version "BIND 9.9.10-P1 (Extended Support Version)" DNSSEC signing in place. DKIM, SPF and DMARC records are also in place for top-level domain (zone). 
Is an "A" record mandatory entry for top-level domain (zone) when using DNSSEC, DKIM, SPF and DMARC configuration?
Thanks
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