单项选择题

A.The configuration of a hierarchical policy map on a tunnel interface is not supported.
B.Class 5555 and class 5554 are both taking up 100% of the bandwidth, leaving nothing for class 1234.
C.The burst size for the traffic shaping is wrongly configured to 15000; this would require an interface capable of sending at 150Mb/s.
D.The burst size for the traffic shaping has been wrongly configured; it should be set as low as possible.
E.The burst size for the traffic shaping has been wrongly configured; it should be set as high as possible.