<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 71-year-old male is brought to the emergency room by his caretaker and presents with difficulty breathing, muscle rigidity in the face, neck, back and upper extremities, and profuse sweating. The intern notes a large wound on his head near the back of his right ear which his caretaker had bandaged up. The caretaker explains that the wound was the result of a fall while walking in his backyard. The intern performs a quick physical exam and observes increased reflexes. The patient was intubated to assist in his breathing and was given diazepam, metronidazole, and an immunoglobulin after the blood work came back. Which of the following neurotransmitters is affected in this patient?? A: Glycine, B: Acetylcholine, C: Dopamine, D: Epinephrine, E: Serotonin,  <response>: This is a clinical vignette describing a patient with muscle rigidity, profuse sweating, and breathing difficulties. The history of a head injury and the physical exam finding of increased reflexes point towards a diagnosis of tetanus. Tetanus is caused by the neurotoxin tetanospasmin which is produced by the bacterium Clostridium tetani. Tetanospasmin blocks the release of inhibitory neurotransmitters glycine and GABA in the spinal cord leading to muscle spasms and rigidity. Therefore, the neurotransmitter affected in this patient with likely tetanus is glycine.A: Glycine 