DHCP客户端通过哪个UDP端口与DHCP服务器进行通信？（）

A.DHCPDISCOVERY
B.DHCPREQUEST
C.DHCPOFFER
D.DHCPACK

A./var/log/nginx
B./var/log/apache2
C./var/log/httpd
D./var/www/logs

A.443
B.80
C.8443
D.8080