Which of the Following Statements Describes a Descriptive Study

Which of the following statements describes a descriptive study?

A) This study examined the relationship between gender and the number of appointments that were missed by the client in the treatment process.
B) This study collected data on several variables regarding the clients of this agency such as gender, race, income level, and family structure.
C) This study examined whether the clients of the support group service improved on self-esteem through the examination of pretest and posttest scores on self-esteem.
D) This study examined data on the relationship between grades in school and depression to see if depression was a potential cause of poor school grades.