Select the true statement concerning test marketing.

Question $6$ options:

Test marketing is simply an extension of the screening and developing stages.

Test marketing should be conducted after all the marketing mix variables have been finalized.

Test marketing is a limited introduction of the product in areas chosen to represent the intended market.

If the product is successful in the test market, then it is ensured of success upon total introduction.

Large corporations usually launch test$-$marketing efforts in one small area at a time.