A Company.com 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 local 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.