单项选择题
A patch has been applied to the operating system. After rebooting, the system is hung. Which of the following commands should have been performed to prevent the system from hanging?（）
A. lppchk, bosboot
B. lslpp -l, oslevel
C. installp -C, lppchk
D. bosboot, synclvodm
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Whichlogfileshowspreviousinstallationinformation?（）
A. /var/adm/ras/bosinstlog
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