Answer:
B. They were regarded as the property of the noble whose fields they worked in.
And C. They made up more than three-quarters of the population.
Explanation:
I took the test, let me know if it's correct :)
The answer is 1/639, since there are 639 chips, and only one of them is 539.
Where´s the passage.? I can´t help you. I need more information