【单项选择题】
The database instance is currently using SPFILE. View the Exhibit and examine the error that youreceived while running the DB Structure Integrity check. <br />  <img src="https://img.ppkao.com/2018-08/chenfang/2018080114445826854.jpg" /><br /> Given below are the steps to recover from the error in random order: <br /> 1: Shut down the instance, if not already done. <br /> 2: Copy one of the remaining control files to a new location. <br /> 3: Change the value of the CONTROL_FILES initialization parameter to correspond to the new location of the 
A、A.1，2，4，3，5，6
B、B.2，4，3，5，6；1 not required
C、C.4，5，6，2，3；1 not required
D、D.5，2，3，4；1 and 6 not required
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