Max Manufacturing wants to obtain data for predicting future year sales. Which type of data should Max Manufacturing obtain to be

most effective in predicting sales?

External data only because buying behaviors are based on customers who are not internal to the company

Internal and external hard data because hard data is difficult to quantify

Internal data only because external data is unstructured and cannot be easily scrubbed

Both external and internal data to learn about customer preferences which can be coupled with data generated through a

company's existing internal processes