The local host on a small network is named Earth. There is also a remote host on the network named Saturn. The system administrator of the network is in the /u/tmp directory of Earth， and starts an ftp to Saturn as root. Which of the following sequence of commands issued from the local host， Earth， will：（）。
1.Change to the /u/new directory on Saturn.
2.Check to see if there is an a.out file on remote host Saturn.
3.Transfer a.out from Earth to Saturn.
A.cd /u/new ls a.out put a.out
B.cd /u/new ls a.out get a.out
C.lcd /u/new ls a.out put a.out
D.lcd /u/new ls a.out get a.out
