title: Multiple activities calling same activity for result
body: <p>Suppose I have 3 activities.</p>
  
  <ul>
  <li>First </li>
  <li>Second </li>
  <li>Result.</li>
  </ul>
  
  <p>First and Second both call Result activity by <code>startActivityForResult()</code>. 
  In Result, on basis of calling activity, I want to return different results. </p>
  
  <p>Is there any way to decide which one has called Result Activity and return result to that activity. </p>