How to find httpd config file location

Zemians-MacBook-Air:~ zemian$ httpd -t -D DUMP_INCLUDES
Included configuration files:
  (*) /private/etc/apache2/httpd.conf
    (498) /private/etc/apache2/extra/httpd-mpm.conf
    (504) /private/etc/apache2/extra/httpd-autoindex.conf
    (544) /private/etc/apache2/other/php7.conf