"Andrew Carnegie became wealthy from the steel and other companies he founded. He paid for the construction of thousands of public libraries, created foundations for scientific research, established a pension fund for teachers, and sponsored many other causes." Which statement best describes these actions:

a
He was a Captain of Industry who created many jobs for immigrants
b
He promoted a sense of responsibility among business leaders to help others
c
He supported the efforts labor unions
d
He fought against anti-trust laws