【单选题】

While reviewing the estimates from the functional managers assigned to your project you discover that one cost estimate is clearly higher than those submitted for previous projects. You should ______ .
A．reject the estimate and remove the functional manager from the project

B．request the supporting details for the estimate to ensure it has been properly prepared
C．accept the estimate and plan to use the additional funding as a reserve
D．question each functional manager for information about this estimate