(5) Suppose that a company's sales increase when the economy is doing well. Also, suppose that the company's advertizing budget is based upon the amount of sales, and that larger sales lead to a larger advertizing budget. A There is an association between how well the economy is doing and the company's advertizing budget. B There is a causal relationship between the company's sales and the company's advertizing budget. C Both of the above. D Neither of the above.