问题：

[单选] What accurately describes the usage of a Cisco AutoQoS command？（）

A . on Catalyst switches， the show auto discovery qos command is used to display the data collected during the Auto-Discovery phase
B . on Catalyst switches， the show auto qos command is used to display packet statistics of all classes that are configured for all service policies
C . on Cisco routers， the show mls qos maps command is used to verify the CoS-to-DSCP maps for egress packet queuing
D . on Cisco routers， the show auto qos command is used to display the AutoQoS interface templates， policy maps， class maps， and ACL