Consider the following piece of code. (The numbers on the left margin denote line numbers.)

Which of the following is correct?

Question

Consider the following piece of code. (The numbers on the left margin denote line numbers.) 
  
  Which of the following is correct?

Answer

In line 17,  r1  and  r2  refer to different instances/objects.

Answer

Lines 11 and 16 increment the member variable  val  of different instances/objects.

Answer

Lines 11 and 16 increment the member variable  val  of the same instance/object.

Answer

In line 17,  r2  and  r3  refer to the same instance/object.

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