In this task, you are given an impractical statement. You are also given three reasons (associated with "A", "B", "C") explaining why this statement doesn't make sense. You must choose the most corresponding reason explaining why this statement doesn't make sense.

[Q]: papers are made of iron
(A) iron is hard and heavy
(B)no paper is made of iron
(C)we usually write on paper
[A]: B

[Q]: One can use oven to make silicon chip easily at home
(A) Silicon chip can only be made in special factories
(B)Silicon chip is essential for informatics
(C)Silicon cannot be made by every country
[A]: A

[Q]: There are seventy minutes in an hour
(A) Seventy minutes are an hour an ten minutes
(B)By the international system standard, an hour has got sixty minutes or 3600 seconds
(C)Seventy hours is more than one minute
[A]:
B