单选题A user can send e-mail， but cannot receive any e-mail. Which of the following settings should be verified in the e-mail account？（）A MAC addressB TCP/IP addressC POP Server settingsD SMTP Server settings
题目
单选题
A user can send e-mail， but cannot receive any e-mail. Which of the following settings should be verified in the e-mail account？（）
A
MAC address
B
TCP/IP address
C
POP Server settings
D
SMTP Server settings