The Main Difference Between Standardized Interviews and In-Depth Interviews Is

The main difference between standardized interviews and in-depth interviews is ________.

A) standardized interviews are usually emergent in nature, while in-depth interviews are conducted both in person and over the telephone
B) standardized interviews involve a script, while in-depth interviews involve directed conversation
C) standardized interviews are typically short, while in-depth interviews are typically lengthy
D) standardized interviews are only used by quantitative researchers while in-depth interviews are only used by qualitative researchers