Kern Corporation entered into an agreement with its investment banker to sell 10 million shares of the company's stock with Kern netting $210 million dollars from the offering. The expected price to the public was $25 per share. The out-of-pocket expenses incurred by the investment banker were $2,000,000. 

a. What profit or loss would the investment banker incur if the issue sold to the public at an average price of $25 per share? 

b. What profit or loss would the investment banker incur if the issue were sold to the public at an average price of $20 per share?

c. Is the agreement between the company and its investment banker an example of a negotiated or a best-efforts deal? Why? Which is riskier to the company? Why?