What Is the Purpose of the Xargs Command

Multiple Choice

What is the purpose of the xargs command?

A) It passes arguments to an X server.
B) It reads standard input (STDIN) and builds up command lines to execute.
C) It helps shell scripts take variable argument lists.
D) It asks a question, graphically, and returns the response to the shell.
E) It allows users to specify long options for commands that normally only accept short options.