After Formulating the Decision Problem, the Next Two Steps in the Research

After formulating the decision problem, the next two steps in the research process are

A) determine the research design; design the data collection method and forms.
B) design the data collection method and forms; design the sample.
C) design the data collection method and forms; collect data.
D) design the sample; determine the research design.
E) determine the research design; design the sample.