In the query profiler view for a query, which components represent areas that can be used to help optimize query performance? (Select TWO)

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In the query profiler view for a query, which components represent areas that can be used to help optimize query performance? (Select TWO)
A . Bytes scanned
B . Bytes sent over the network
C . Number of partitions scanned
D . Percentage scanned from cache
E . External bytes scanned

Answer: A, C