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In a production cluster with 3 executor nodes where the driver and executors use the same VM type, which Ganglia Metrics indicator would identify a performance bottleneck due to driver-side code execution?
A
The five Minute Load Average remains consistent/flat
B
Bytes Received never exceeds 80 million bytes per second
C
Total Disk Space remains constant
D
Network I/O never spikes
E
Overall cluster CPU utilization is around 25%
