请根据用户描述,判断问题类型:Iboughtyourprograminthebeliefthatitwillhelpme.Unfortunately,Iwantedtorestorefilesfromtheuser’sfolder.Theprogramstartedwitha99%recoverywithaninstructiontobepatient.AftertwodaysIlostmypatience.IhaveWindows1064bit.()
A. UncertainCrash
B. UncertainFreeze
C. ScanStop