The word "fiasco" as used in Para. 4 is closest in meaning to ______.

A． there was once a wave of Mars exploration by scientists.
B． life has existed on Mars.
C． Lowell's claim is proved incorrect today.
D． It's a waste of time to try to answer the question concerning life on Mars.

A． The electronic book is now available for $ 200,400.
B． The ink has already been produced a great deal.
C． The ink will work only with something conductive.
D． The ink will make an electronic book unaffordable.