76.查询获取 Hadoop 全部的配置信息官方网址是
A. http://hadoop.apache.org/docs/current/hadoop- project-dist/hadoop-common/core-default.xml
B. http://hadoop.apache.org/docs/current/hadoop- project-dist/hadoop-hdfs/hdfs-default.xml
C. http://hadoop.apache.org/docs/current/hadoop- mapreduce-client/hadoop-mapreduce-client- core/mapred-default.xml
D. http://hadoop.apache.org/docs/current/hadoop- yarn/hadoop-yarn-common/yarn-default.xml