问题详情

Which of the following is CORRECT about the use of the American National Flag？
A．There has been a lot of controversy over the use of flag.
B．The best athletes can wear uniforms with the design of the flag.
C．There are precise regulations and customs to be followed.
D．Americans can print the flag on their cushions or handkerchiefs.请帮忙给出正确答案和分析，谢谢！