Question: Which line of code implements a Reducer method in MapReduce 2.0?

1. public void reduce(Text key, Iterator values, Context context){?}
2. public static void reduce(Text key, IntWritable[] values, Context context){?}
3. public static void reduce(Text key, Iterator values, Context context){?}
4. public void reduce(Text key, IntWritable[] values, Context context){?}

Answer: The correct answer of the above question is Option A:public void reduce(Text key, Iterator values, Context context){?}