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.
