Question: What does this Scala code do? val merged =nas1.zip( nas 2)map{ case (a,b)=> a.merge(b) } Combine the corresponding elements in nas 1 and nas 2

What does this Scala code do? val merged =nas1.zip( nas 2)map{ case (a,b)=> a.merge(b) } Combine the corresponding elements in nas 1 and nas 2 using its method merge. Reduce elements in nas 1 and nas 2 and merge them. Merge elements in nas 1 and nas 2 using its method merge and return a pair of values Compress nas 1 and nas 2 using its merge method and return a zipped file. Question 2 ( 2 points) Given a set of data, if you are to compute sum of square of all values in the data and using mapreduce method, what would be the statement in yourffirst step? Map addition to all values Map square to all values Reduce addition to all values Reduce squared to all values

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