题目：A disadvantage of the synchronise-and-stabilise software model is that:
A. the model cannot be used if the initial specification is incomplete.
B. the developers cannot gain an insight into the operation of the product until a build is complete.
C. the model can easily degenerate into the 'build-and-fix' approach.
D. the approach needs the existence of a disciplined change control operation before it can be put in place. Thus it is unlikely to be used by the many small software development organizations that typify the industry.
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