Focus groups as a technique is especially valuable in which of the following scenarios?
A. When the researcher has perfect clarity about the research.
B. For obtaining general background about the topic or issue.
C. For interpreting previously obtained quantitative results.
D. When the researcher is interested in establishing a causal relationship between two variables.
E. For generating a level of understanding about influences in the participants' world.
Choose the correct answer from the options given below: