Apart from its impact on commercial and industrial structures and procedures, the rapid development of the global communications system is apparently ______ barriers between peoples at a pace neither governments nor international agencies can hope to control.

A．which apparently developing at the expense of
B．which apparently develop in the expense of
C．which is apparently developing at the expense of
D．which is apparently developing in the expense of

A．for leading people to
B．to lead people to
C．to lead people into
D．for leading people into