Which of the following statements about participants in the quality effort is wrong?
A.Top and middle management，employees，and suppliers all play an important role in making quality improvements.
B.Employee participation in quality programs has three key ingredients：teamwork，empowerment，and training.
C.Companies that adopt quality programs tend to encourage employees to start quality programs of their own.
D.Many firms are moving toward long-term contracts with fewer suppliers but are requiring better quality.
正确答案是A