American Service(Plated Service)means that ( ).A．m eals are prepared or finished at tableside by service staffB．p roduction staff pre-portion food on plates in kitchen; service staff serve to guestC．q uantities of food are pre-arranged on a self-service line; guests pass along the line and help themselvesD．a ppetizers and pre-poured champagnes can be served by service staff at reception while guests stand