What Is the Purpose of the Minimal Review of Relevant

What is the purpose of the minimal review of relevant studies that the grounded theory researcher undertakes before writing the research proposal?

A) To compare the anticipated findings with the findings of similar research
B) To direct the researcher in how to strategize data collection
C) To help the researcher to identify previous findings that will assist in interpretation of the planned study
D) To reveal the need for the planned research by identifying what others have done