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Which of the following is true about interfaces: A. Can not contain constants but can have variables. B. None of the items listed. C. All methods in an interface must be abstrac…

Which of the following is true about interfaces: A. Can not contain constants but can have variables. B. None of the items listed. C. All methods in an interface must be abstrac…
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Which of the following is true about interfaces: A. Can not contain constants but can have variables. B. None of the items listed. C. All methods in an interface must be abstract. D. A class can only implement one interface. E. An interface can have only non abstract methods.

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User Seongeun So
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7 votes

Answer:

C

Step-by-step explanation:

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User Lithilion
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4 votes

Answer:

C. All methods in an interface must be abstract.

Step-by-step explanation:

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User Ulrichb
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