Refer to the exhibit.

If Server A is an FTP server, which setting will enable active FTP optimization on Steelhead Mobile Client R?

A.
Steelhead A. in-path auto srcport 20

B.
Steelhead A. in-path auto dstport 20

C.
Client R: in-path auto dstport 20

D.
Default auto-discovery rules will work

E.
None of the above