Qualitative Research Often Involves What's Known as an Iterative Process

Qualitative research often involves what's known as an iterative process for data collection and analysis.This terminology refers to the fact that,in qualitative research:

A) researchers focus more on narrative data than on statistics and numbers.
B) researchers typically do not begin by stating a hypothesis.
C) researchers may collect and analyze data,then collect and analyze some more data.
D) researchers first ask open-ended questions and then follow up with probing questions.