Which country celebrates Fools' Day on December 28

A．tricks played on others may happen to you
B．your constant tricks will annoy others at usual time
C．don't fool others after April Fools' Day
D．making tricks on others is permitted only on April Fools' Day

A．to have a bad effect on the person who did it
B．to fly back after hitting something
C．to produce harmful action
D．to have a bad effect on everybody