On July 1, 2007, Cole Co. issued 2,500 shares of its $10 par common stock and 5,000 shares of its $10 par convertible preferred stock for a lump sum of $125,000. At this date Cole's common stock was selling for $24 per share and the convertible preferred stock for $18 per share. The amount of the proceeds allocated to Cole's preferred stock should be:
a. $62,500.
b. $75,000.
c. $90,000.
d. $68,750.