Which among the following are the elements of total cost associated with cash management?

<p><strong>{1. Cost of conversion of marketable securities into cash2. Holding cost3. Optimum cash balance4. Opportunity cost}</strong></p> <p> </p> <p style="text-align:center;"><strong>Answers:  </strong></p> <p style="text-align:center;"><strong>A.  1 &amp;3  </strong></p> <p style="text-align:center;"><strong> B.  1 &amp;4   </strong></p> <p style="text-align:center;"><strong>C.  2 &amp;3   </strong></p> <p style="text-align:center;"><strong> D.  3 &amp;4</strong></p>