Assuming that a socket has been created with a name of server, what effect does the statement server. listen $(10)$ have?

a$.$ The socket will allow a maximum of $10$ requests, then close.

b$.$ The socket will accept a maximum of $10$ requests at a time.

c$.$ The socket will listen for a maximum of $10$ minutes, and then close.

d$.$ The socket will listen until the integer $10$ is seen in the data stream.