The configuration shown in the exhibit specifies the 'scheduler-map' 'customer-traffic' on the interface ge-0/0/0, but it does not explicitly configure a classifier. Therefore, the default classifier will be used, classifying incoming traffic based on default CoS settings. The 'best-effort-scheduler' is set to a transmit rate of 40% with low priority, meaning it is entitled to at least 40% of the bandwidth. However, if the expedited-forwarding queue is not using all available bandwidth, the best-effort queue can use more than 40% of the bandwidth on the ge-0/0/0 interface. This makes options A and D correct.