If a Researcher Used a Sample Then Interviewed Part of That

Multiple Choice

If a researcher used a sample then interviewed part of that sample,leading to the development of a structure questionnaire and then administered it to a different random sample,the diagram for that research would be written as ______.

A) (QUAL+QUAN) →(QUAL+QUAN)
B) (QUAL→QUAN) →(QUAL→QUAN)
C) (QUAL+QUAN) →(QUAL→QUAN)
D) (QUAL→QUAN) →(QUAL+QUAN)