Customer research forecasting which uses primary data collection done by which of the following methods?

concept testing $-$ a process of evaluating consumer response to a particular offering prior to introduction to the market. Concept tested can be based on a description of the offering or can involve a fully functional prototype. A marketer can use a focus group.

market testing $-$ relies on test markets to estimate market potential and future sales volume. It is often used as a go$-$no$-$go decision as to whether or not to launch a new product. Test markets aim to replicate all relevant aspects fo the market

both of the above

neither of the above