多选题A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal？（）AStore the data in a vocal variable.BStore the data in an instance variable.CStore the data in the HttpSession object.DStore the data in the ServletContext object.EStore the data in the ServletRequest object.
多选题
A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal？（）
A
Store the data in a vocal variable.
B
Store the data in an instance variable.
C
Store the data in the HttpSession object.
D
Store the data in the ServletContext object.
E
Store the data in the ServletRequest object.
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