What is the cause of the problem?

Click the Exhibit button.
user@host> show security flow session extensive
Session ID: 1173, Status: Normal
Flag: Ox0
Policy name: two/6
Source NAT pool: interface, Application: junos-ftp/1
Dynamic application: junos:UNKNOWN,
Application traffic control rule-set: INVALID, Rule: INVALID
Maximum timeout: 1800, Current timeout: 1756
Session State: Valid
Start time: 4859, Duration: 99
In: 172.20.103.10/56457 –> 10.210.14.130/21;tcp,
Interface: vlan.103,
Session token: Ox8, Flag: Ox21
Route: 0x100010, Gateway: 172.20.103.10, Tunnel: 0
Port sequence: 0, FIN sequence: 0, FIN state: 0,
Pkts: 12, Bytes: 549
Out: 10.210.14.130/21 –> 10.210.14.133/18698;tcp,
Interface: ge-0/0/0.0,
Session token: 0x7, Flag: Ox20
Route: Oxf0010, Gateway: 10.210 14.130, Tunnel: 0
Port sequence: 0, FIN sequence: 0,
FIN state: 0,
Pkts: 8, Bytes: 514
Total sessions: 1A user complains that they are unable to download files using FTP. They are able to connect to the remote site,
but cannot download any files. You investigate and execute the show security flow session extensive command
to receive the result shown in the exhibit.
What is the cause of the problem?

A.
The NAT translation is incorrect.

B.
The FTP ALG has been disabled.

C.
Passive mode FTP is not enabled.

D.
The FTP session is using the wrong port number.