Answer:
A firm commitment arrangement with an investment banker occurs when an investment banker buys the securities for less than the offering price and accepts the risk of not being able to sell them.
The correct option is B.
Step-by-step explanation:
A firm commitment arrangement happens when an investment banker buys the securities for less than the offering price and accepts the risk of not being able to sell them.
However, the issuer receives a little less money than the offering price but he gets a specific amount for all the security being issued. The risk rests completely on the investment banker.
Therefore, the correct option is B.