Which factor contributed to the formation of large corporations during the late 19th century?
a) production could be organized more efficiently on a larger scale.
b) wage levels could be increased when employing a smaller number of workers.
c) businesses could only export to foreign markets with a large amount of capital.
d) government support for businesses was more likely in a highly concentrated industry.
(if someone could i have a feeling it's either a or b but i'm very unsure and i've looked through all my notes for school to figure this out. )