Task: Question Answering
Input (English): Question: Guillain-Barré syndrome is an acute inflammatory demyelinating disorder of the peripheral nervous system. The loss of muscular strength in the acute phase can imply an urgency, which in severe cases results in: 
 Options:  <1> Exclusive loss of muscle strength in the lower extremities. <2> Tetraplegia and respiratory failure that need to control the patient's circulatory status, endotracheal intubation and mechanical ventilation. <3> Psychomotor agitation that leads to sleep disorders. <4> Scarce affectation of costal and / or diaphragmatic muscles. <5> Alterations exclusively sensory.
Output (English): 2