【单项选择题】
On the development database rac0， there are six raw devices： /dev/raw/raw1 through /dev/raw/raw6. /dev/raw/raw1 and /dev/raw/raw2 are 8GB each， and the rest are 6GB each. An existing disk group +DATA1， of NORMAL REDUNDANCY， uses /dev/raw/raw1 and /dev/raw/raw2. <br /> Which series of the following commands will drop one of the failure groups for +DATA1， create a new disk group +DATA2 using two of the remaining four raw devices， and then cancel the drop operation from +DATA1？ （）<br /> <img src="https://img.ppkao.com/2018-08/chenxin/2018080210115785834.jpg" /><p> On the development database rac0， the
A、A.A
B、B.B
C、C.C
D、D.D
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