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As a Google Cloud Professional Machine Learning Engineer, you are tasked with defining a machine learning problem for a retail company that wants to predict customer churn. The company has provided you with historical customer data, including purchase history, customer service interactions, and demographic information. Which of the following steps is crucial in the initial phase of defining the machine learning problem to ensure the success of the project? Choose the two most critical steps from the options provided.
A
Conducting exploratory data analysis to understand patterns and relationships in the data
B
Selecting the appropriate machine learning model for training
C
Defining the problem type (e.g., classification, regression, clustering) based on the business objective
D
Setting up the data storage infrastructure to handle large volumes of data
E
Identifying the target variable that needs to be predicted or classified