Why Is the Sample Size in Qualitative Studies Generally Smaller

Why is the sample size in qualitative studies generally smaller than in quantitative research?

A) Qualitative studies use more accurate information collection methods than quantitative studies.
B) Qualitative research does not involve as many variables as quantitative research.
C) The sample size needed for a qualitative study depends on how quickly data saturation is reached.
D) The sample size needed for a qualitative study depends on the randomization strategy chosen by the researcher.