Which of the Following Statements About Theory Z Style of Management

Which of the following statements about Theory Z style of management is true?

A) Theory Z style of management does not reflect U.S.culture.
B) According to Theory Z, workers should be laid off whenever business is bad.
C) According to Theory Z, decision making should be done by the individual not the group.
D) Theory Z contains many elements from Japanese management.
E) According to the Theory Z style of management, the responsibility for success or failure is shared by the group.