【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：  <br /> # cu -ml tty2  <br /> cu： 0835-028 The connection failed. NO DEVICES AVAILABLE.<br /> 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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