Because some teachers believe that memorization and learning are ______, they may tell you that you shouldn't memorize material; rather, you should understand it.

A．Beckham always attracts the public attention by his fashionable hair style and constant appearance in the media.
B．Beckham's transfer fee breaks a new record in the football world.
C．Beckham's trademark free kick and passes are still best-performed for his new club.
D．Beckham controversially leaves the club he has been grown up with and joins one of the other most prestigious clubs in Europe.

A．would have been
B．can have been
C．must be
D．should have been