A 14-year-old girl presents with a throbbing headache that has worsened over the past 2 days. She has never had a headache of this nature before and has no history of trauma. The headache is localized to her right temporal region. Alleviating factors include sleep and sitting in a dark room, and aggravating factors include loud noise and bright lights. She has taken ibuprofen and acetaminophen with little relief. She has recently noticed problems balancing and walking and is becoming concerned. Her only medications include oral contraceptive pills. On physical exam, she appears to be uncomfortable, but she tolerates the exam well. She does not have any neurological deficits, and vital signs are all within normal ranges. Which of the following diagnostic imaging choices should be performed in an outpatient setting for this patient?A. Head computed tomography scan without contrast. Head computed tomography scan with contrast. MRI of headD. Ultrasound guided lumbar puncture