Answer – A
The AWS Documentation mentions the following:
Amazon EMR helps you analyze and process vast amounts of data by distributing the computational work across a cluster of virtual servers running in the AWS Cloud. The cluster is managed using an open-source framework called Hadoop. Amazon EMR lets you focus on crunching or analyzing your data without having to worry about the time-consuming setup, management, and tuning of Hadoop clusters or the compute capacity they rely on.
For more information on AWS EMR, please refer to the below URL:
http://docs.amazonaws.cn/en_us/aws/latest/userguide/emr.html