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In a comprehensive machine learning project aimed at improving customer satisfaction for an e-commerce platform, several roles contribute to the project's success. Given the scenario where the project's success hinges on accurately translating business objectives into measurable machine learning outcomes, who among the following is primarily responsible for understanding the business problem and defining the success criteria for the model output? Choose one correct option.
A
Model Trainer - Focuses on optimizing the model's performance through training and validation, without direct involvement in defining business objectives.
B
Data Scientist - Primarily involved in data analysis and model building, but may not always have the authority or context to define business success criteria.
C
Machine Learning Engineer - Specializes in the technical deployment and scaling of machine learning models, with limited focus on business problem definition.
D
Professional Machine Learning Engineer - Bridges the gap between business and technology by defining how the model output should be utilized to solve the business problem, including setting the success criteria.