Task: Question Answering
Input (English): Question: They release noradrenaline the: 
 Options:  <1> Sympathetic preganglionic fibers. <2> Sympathetic Postganglionic Fibers <3> Preganglionic parasympathetic fibers <4> Postganglionic parasympathetic fibers <5> Only the chromaffin cells.
Output (English): 2