单选题A system administrator has created tty2 on a serial port connection to a system. When attempting to verify the connection the following error is observed： # cu -ml tty2 cu： 0835-028 The connection failed. NO DEVICES AVAILABLE. Which of the following should be performed to correct this error？（）ACreate an entry for tty2 in the /etc/uucp/Devices fileBRe-enter the command as cu -dml tty2CCreate an entry for tty2 in the /etc/uucp/Systems fileDRe-enter the command as cu -s 9600 -dh -t -l tty2
单选题
A system administrator has created tty2 on a serial port connection to a system. When attempting to verify the connection the following error is observed： # cu -ml tty2 cu： 0835-028 The connection failed. NO DEVICES AVAILABLE. Which of the following should be performed to correct this error？（）
A
Create an entry for tty2 in the /etc/uucp/Devices file
B
Re-enter the command as cu -dml tty2
C
Create an entry for tty2 in the /etc/uucp/Systems file
D
Re-enter the command as cu -s 9600 -dh -t -l tty2
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