What is Higonnet’’s attitude towards the fact that the two sides of the "myth" complemented each other

A．Because he has a phrase book which can talk.
B．Because he has a tape recorder.
C．Because he knows four different languages.
D．Because his phrase book produces phrases in four languages.

A．It could be seen only through special equipment.
B．It did not approach the Earth.
C．It did not provide valuable scientific information.
D．It was moving too rapidly for scientists to photograph.