Which statement is true regarding the layers within a three-tiered architecture?

A.
The main role of the Collection layer is to service requests from user Event Lists. The main roles of the Aggregation layer are to perform event processing and correlation. The main roles of the Display layer are to absorb write locks from Probes inserting events and performdeduplication.

B.
The main roles of the Collection layer are to absorb write locks from Probes inserting events and
perform deduplication. The main role of the Aggregation layer is to service requests from user Event Lists. The main roles of the Display layer are to perform event processing and correlation.

C.
The main roles of the Collection layer are to perform event processing and correlation. The main roles of the Aggregation layer are to absorb write locks from Probes inserting events and
performdeduplication. The main role of the Display layer is to service requests from user Event Lists.

D.
The main roles of the Collection layer are to absorb write locks from Probes inserting events and performdeduplication. The main roles of the Aggregation layer are to perform event processing and correlation. The main role of the Display layer is to service requests from user Event Lists.