One of supervisory controls the operations of the cash inside companies:

<p style="text-align:left;"><span><span>A -</span> <span>separate</span> <span>tasks</span> <span>conflicting</span></span></p> <p style="text-align:left;"><span><span>B</span> <span>-</span> <span>bilateral surveillance</span></span></p> <p style="text-align:left;"><span><span>C</span> <span>- periodic inventory</span></span></p> <p style="text-align:left;"><span><span>D</span> <span>-</span> <span>all of the above</span></span></p>