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Question

In order to avoid ambiguity among an interface derived from two base interfaces with same method name(and signature), the right code among the following given codes is?
a)

 interface i1
 {
     void m1();
 }
 interface i2
 {
     void m1();
 }
 interface i3 :i1, i2
 {
 }
 class c3 :i3
 {
     void i1.m1()
     {
     }
     void i1.m1()
     {
     } 
}

b)
 interface i1
 {
     void m1();
 }
     interface i2
     {
         void m1();
     }
     interface i3 :i1, i2
     {
     }
     class c3 :i3
     {
         void i1.i2.m1()
         {
         }
     }

c)
  interface i1
  {
      void m1();
  }
  interface i2
  {
      void m1();
  }
  interface i3 :i1, i2
  {
  }
  class c3 :i3
  {
      void i1.m1()
      {
      }
      void i2.m1()
      {
      }
  }

a.

a

b.

b

c.

c

d.

All of the mentioned

Answer: (c).c

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Q. In order to avoid ambiguity among an interface derived from two base interfaces with same method name(and signature), the right code among the following given codes is?