单选题During which phase of the boot process is the rootvg volume group varied on and the root file system (hd4) checked?（）A Boot phase 1B Boot phase 2C Boot phase 3D Boot phase 4
题目
单选题
During which phase of the boot process is the rootvg volume group varied on and the root file system (hd4) checked?（）
A
Boot phase 1
B
Boot phase 2
C
Boot phase 3
D
Boot phase 4