A video game developer is reviewing its process for handling customer complaints in order to understand and improve customer satisfaction scores. They decide to frame their process in a formula that shows how various inputs affect the output. In this case, what would be the best way to represent that formula? A Resolved Customer Complaint = employee training + complaint volume + complaint type B Resolved Customer Complaint = f (complaint volume / hours of employee training) C Resolved Customer Complaint = 3 (employee training, complaint volume, complaint type) D Resolved Customer Complaint = f (employee training, complaint volume, complaint type)