Number of children been half, each got 16 pencils. How many pencils were distributed to the class 

Free pencils were distributed equally among the children in the class. The number of pencils each child got was one-eight of the number of children. Had the number of children been half, each child would have gotten 16 pencils. How many pencils were distributed to the class.
a.512 pencils
b.256 pencils
с.432 pencils
d.8192 pencils