Given the $75 product price, at its optimal output the firm will

         Total   Total
Total    fixed   variable   Total
product  cost      cost     cost
   0      $50    $  0      $ 50
   1       50      70       120
   2       50     120       170
   3       50     150       200
   4       50     220       270
   5       50     300       350
   6       50     390       440

1.  Refer to the above data.  Given the $75 product price, at its optimal output the firm will:
A.  realize a $25 economic profit.
B.  realize a $30 economic profit.
C.  incur a $25 loss.
D.  realize a $30 loss.