Cloning has been criticized for all the reasons EXCEPT ______.

A．Because it wants to add something new.
B．Because it is too energetic.
C．Because it wants to keep up with the time.
D．Because its form, style and tempo are outdate

A．people feel cloned children may not live longer than those naturally born
B．cloning technology is not so advanced that people feel doubts about it
C．it is so expensive that ordinary people have no access to it
D．it is not only costly and inefficient, but unacceptable as well