On a network, all $38$ of the stations in the marketing department are connected to switch A$.$ That switch $($A$)$ is connected to port #$1$ on switch $B$ in the network room. A file server is connected to port#$5$ on switch B$.$ Which of the following is true about the forwarding table of the switch B$?$

It has multiple entries in its forwarding table for port #$1.$

It is empty because it learns port #$1$ is connected to a switch and not a PC$.$

It has only one entry in its forwarding table $-$ Port: $1$; MAC address: MA RK TG DP MT$.$

It will go down soon because its forwarding table will be overloaded.