A consultant is engaged to setup an XS40 to deploy in a datacenter with the release level U.V.W. However, the manufacturer shipped the newer X.Y.Z level on the device. The consultant needs to install the older release in order to correct issues with the X.Y.Z firmware level with this particular customer.

What is the correct sequence to achieve this version rollback from the terminal port using CLI?

     
A.
 
xs40# su admin
xs40# flash
xs40# copy http://repository/U.V.W.scrypt2
image:U.V.W.scrypt2
xs40# boot U.V.W.scrypt2 rollback
     
B.
 
xs40(config)# flash
xs40(config-flash)# copy http://repository/U.V.W.scrypt2
image:U.V.W.scrypt2
xs40(config-flash)# boot rollback
     
C.
 
xs40# configure terminal
xs40(config)# copy http://repository/U.V.W.scrypt2
image:U.V.W.scrypt2
xs40(config)# flash
xs40(config-flash)# boot image U.V.W.scrypt2
     
D.
 
A firmware upgrade/downgrade can't be performed from the terminal port.