Which of the following is a key difference between peer$-$to$-$peer $($P$2$P$)$ file sharing and client$-$server architecture?

A$)$ P$2$P networks are generally more secure than client$-$server architecture due to the lack of a central server.

B$)$ In P$2$P$,$ all nodes act as both clients and servers, whereas in client$-$server architecture, nodes are strictly divided into clients and a central server.

C$)$ P$2$P file sharing requires a dedicated, powerful central server to manage file transfers, while client$-$server architecture distributes file transfer workload among all peers.

D$)$ In client$-$server architecture, files are distributed equally across all peers, whereas P$2$P networks rely on a central server for distribution.