Some questions on pointer arithmetic

After the following sequences, at which array element will the pointer ip be pointing?
  1. int * ip, ia[12];
    ip = ia++;
    
    ia[1]
  2. int * ip, ia[12];
    ip = ia;
    
    ia[0]
  3. int * ip, ia[12];
    ip = ia + 3;
    
    ia[2]

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