Question: A 24-year-old student who, after three weeks of a cold in the upper respiratory tract, visited the doctor for a sensation of numbness in his hands and loss of limb strength in recent days. The picture was preceded by low back pain. In the exploration, it stands out, decrease of asymmetric muscular force in upper and lower extremities, loss of osteotendinous reflexes. In this patient the most likely diagnosis is: 
 Options:  <1> Myasthenia gravis. <2> First outbreak of multiple sclerosis. <3> Acute inflammatory demyelinating polyradiculopathy. <4> Dermatomyositis <5> Amyotrophic Lateral Sclerosis.
3