And so this Bridge is a wonder of science. But in no less degree it is a triumph of faith. . . . But the money which did these things was not the money of those who own the Bridge. The money was lent to them on the faith that these two great cities would redeem their bond. —Opening Ceremonies of the
New York and Brooklyn Bridge,
Seth Low

How do the facts in this excerpt support Low’s opinion that the bridge is “a triumph of faith”?

They show that the money for the project came from investors who believed in it.
They show that the two great cities were able to pay back the money.
They show that science was just as important as faith to the success of the project.
They show that the money came from the budget of the two cities.