Which of the following statements indicate the use of descriptive study?
A. Used in the comparison between a new SSRI drug and Venlafaxine.
B. To compare the difference between random sampling and alternate sampling methods for assessing the efficacy of [CT and psychotherapy as a treatment for depression patients with psychotic depression.
C. To document a cluster of Wegener's granulomatosis cases that have recently appeared in your area.
D. To evaluate the effects of Team-Based Learning (TBL) versus didactic lecture.
E. None of the above.