Question: Which of the following is true?(Java) (a) A single reference can refer to multiple objects at one time. (b) Multiple references can refer to the

Which of the following is true?(Java) (a) A single reference can refer to multiple objects at one time. (b) Multiple references can refer to the same, single object. (c) An object can only be referred to by a single reference. (d) A reference always refers to a valid object.

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