![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
Which of the following is most likely the cheapest and quickest means to collect data for marketing research?
A.
utilizing external agencies for research
B.
seeking marketing intelligence inputs from partnering firms
C.
seeking data regarding strategies adopted by competitors
D.
utilizing internal databases to gather sales data