why is spain a good example of how most conquered peoples of other faiths were treated under the umayyad caliphate?

a. jews and christians were forced to convert to islam, though many chose to do so willingly.
b. jews, christians, and non-arabic speaking muslims there were all kept strictly separated from wider arabic-speaking muslim society.
c. jews and christians there were persecuted by muslims and had very limited rights.
d. jews and christians there coexisted peacefully with muslims and were allowed to practice their own religions.

explain why you chose or eliminated answer a:
explain why you chose or eliminated answer b:
explain why you chose or eliminated answer c:
explain why you chose or eliminated answer d: