domain name system – DNS Dig response

I am using DIG command here and i get this back?


;wilson.wonder.circus. IN A

;; AUTHORITY SECTION: circus. 86400 IN NS hal.sis.circus. circus. 86400 IN NS no.bro.circus.

;; ADDITIONAL SECTION: hal.sis.circus. 86400 IN A no.bro.circus. 86400 IN AAAA 2001:6b0:1::246

Here below is a picture that this response is from

enter image description here

And is comming from a Root Server ?

The question is that how can i know that is a root server that is giving this answer

back from this this returning answer??