AdeveloperchoosestoavoidusingSingleThreadModelbutwantstoensurethatdataisupdatedinathread-safemanner.Whichtwocansupportthisdesigngoal?()
A. Storethedatainavocalvariable.
B. Storethedatainaninstancevariable.
C. StorethedataintheHttpSessionobject.
D. StorethedataintheServletContextobject.
E. StorethedataintheServletRequestobject.