How is Hadoop managed in an Isilon environment?

How is Hadoop managed in an Isilon environment?
A . Files are stored in a specialized HDFS-compatible file system format on the Isilon cluster
B . HDFS data is on Isilon; computations are handled by Hadoop
C . HDFS Data is on Hadoop; computations are handled by Isilon
D . MapReduce on the Isilon cluster allows data to be distributed across both platforms

Answer: B