Which of the following statements is most CORRECT regarding diagnosis of intellectual disability (ID)? Group of answer choices The DSM-5 indicates that patients with ID should have intellectual functioning that is two standard deviations below the population mean. The DSM-5 indicates that patients with ID should have intellectual functioning that is three standard deviations below the population mean. The DSM-5 is not useful in the diagnosis of ID because it is a clinical diagnosis. The DSM-5 indicates that patients with ID should have intellectual functioning that is average as compared to the population mean