Which choice is not correct?
A.
when a firm’s internal and external factors have been changed significantly,the firm should take corrective actions
B.
when the firm’s expected results have significant difference with actual results,the firm should take corrective actions
C.
when the firm’s actual results are what the firm’s expected,the firm should continue present course
D.
when the firm’s actual results are what the firm’s expected,the firm should take corrective actions