Which two statements describe the functions that two components of MapReduce provide?
(Choose two.)
A.
The Mapper builds a route through the Hadoop network.
B.
The Mapper tells the cluster which data points it wants to retrieve.
C.
The Mapper takes the data and aggregates it.
D.
The Reducer heuhsticalfy prunes the decision tree.
E.
The Reducer partitions a large query into smaller queries.
F.
The Reducer takes the data and aggregates it.