Which two IBM SPSS Modeler Professional node applications represent a correct approach to accomplish this task?

A customer has a large data set with no target variables or known results and is looking for a good approach for understanding more about groups within the data set.

Which two IBM SPSS Modeler Professional node applications represent a correct approach to accomplish this task? (Choose two.)
A .  The customer uses a Kohonen node in an effort to group data into clusters using a self-organizing map of neurons.
B .  The customer uses a TwoStep node to identify the optimal set of clusters within the data.
C .  The customer uses a RFM Aggregate node to identify the optimal set of clusters within the data.
D .  The customer uses a Carma node in an effort to group data into clusters using a self-organizing map of neurons.

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Answer: A,B