Answer: it would be (a) because the Magna Carta was Witten in june 15 1215, and it prevented the king from having to much power over the law. it gave him a limit on what he could do.
The Magna Carta guaranteed that the goverment was limited on what it could do to the people, the land , and the laws of the people and land.
and if your really into histroy like me go to the cathedral church licoln and salsbury in london two see one of the original copeis or go to london and go to the big british library in london.