An Example of a Mixed Methods Research Study Would Be

An example of a mixed methods research study would be:

A) Researchers conducting in-depth interviews with a limited number of participants, then creating a structured questionnaire based on those interviews, and then having a larger sample of research participants fill out the questionnaire
B) Researchers giving a group of participants a quantitative questionnaire to fill out; analyzing the answers; then conducting a follow-up quantitative survey of a larger group
C) Researchers conducting an in-depth case study of homeless people who live near a park in a large city
D) Researchers developing a casual-comparative research method to explain why a group of students have begun bullying other students in their dorms