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A. b.equals（b） returns true.
B. b.equals（c） returns the same result as b == c.
C. b.eqials（c） can return false even if c.equals（b） returns true.
D. b.equals（c） throws an exception if b and c are different wrapper types.
E. b.equals（c） returns false if the type of wrapper objects being compared are different.

A. abc
B. null
C. abcdef
D. Compilation fails.
E. The code runs with no output.
F. An exception is thrown at runtime.