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When a streaming query is initiated without specifying an output mode, and the target table already contains records, what happens?
A
The query fails because the output mode is mandatory.
B
Complete mode is automatically selected, replacing the entire table with the current micro-batch of data.
C
Update mode, the default output mode, is selected, updating only the rows changed since the last micro-batch.
D
Append mode is selected by default, adding only new records to the target table.
E
The output mode is determined by the type of data being loaded.
