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【单选题】
A sales volume variance can sometimes be analysed into a market size variance and a market share variance, the following statements have been made about these variances a. I n a competitive market, a market share is controllable by sales management b. In a competitive market, a market size variance is not controllable by sales management. W hich of the above statements is/are ture?A.
Only a is tur e
B.
Only b is ture
C.
Neither a nor b is ture
D.
Both a and b are ture
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