Dr. Antonio conducted a study on a patient who was experiencing extreme depression and was suicidal. Dr. Antonio recorded the patient’s thoughts and actions in an attempt to determine what thoughts most likely led to the suicidal ideation. What type of study is Dr. Antonio conducting, and what conclusion can he make? Dr. Antonio is conducting a case study, and he can conclude that certain thoughts led to suicidal ideation. A Dr. Antonio is conducting a case study, and he can conclude that certain actions led to suicidal ideation. B Dr. Antonio is conducting a case study, and he can conclude that for this patient certain thoughts are related to suicidal ideation. C Dr. Antonio is conducting a naturalistic observation, and he can conclude that for this patient certain thoughts are related to suicidal ideation. D Dr. Antonio is conducting a naturalistic observation, and he can conclude that for this patient certain actions led to suicidal ideation.