How does thematic saturation relate to sample size in qualitative research?

How does thematic saturation relate to sample size in qualitative research?

• A. Saturation is reached when no new themes emerge, guiding sample size.
• B. Saturation means you need a fixed minimum sample size before data collection.
• C. Thematic saturation is achieved only with very large samples.
• D. Saturation is determined by the research budget.

Answer: (A)