Which two are true about Singletons?

Question

Options

• AA Singleton must implement serializable.
• BA Singleton has only the default constructor.
• CA Singleton implements a factory method.
• DA Singleton improves a class's cohesion.
• ESingletons can be designed to be thread-safe.

• A
  11% (6)
• B
  7% (4)
• C
  80% (43)
• D
  2% (1)

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