During the examination, the examiner notices that the driver is distant and has a flat affect/expression, and lacks eye contact during the exam. The examiner should: a. Provide the driver with a "CAGE" questionnaire. b. Require an SPE and certify the driver with a 3-month certificate. c. Certify the driver with a 1-year certificate. d. Refer him/her to a mental health profession prior to consideration for certification