To Pay for Building the Myriad Industrial Systems and Facilities

To pay for building the myriad industrial systems and facilities needed to industrialize America, all of the following developments occurred EXCEPT

A) foreign governments investing heavily in U.S. industry for both political and economic reasons.
B) ordinary Americans having more and more surplus wealth to save and invest.
C) a rapid increase in the use of the form of business organization known as the corporation, which issued certificates of stock.
D) savings banks and stock exchanges channeling investment funds into the purchase of corporate stock.