Answer:
a. IBM issues 2,000,000 shares of new stock and sells them to the public through an investment banker.
Explanation:
Basically, there are two market i.e primary market and the secondary market.
In the primary market, the shares of new stock are sold to the public at large for the first time or we can say it is an initial public offer.
And, in the secondary market, the buying and selling of stocks is done with themselves without direct transaction with the company and investors
In the given options, option A is the most appropriate option among them as the new stock is selling to the public by involving the investment banker.