Instructions: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
Input: Question: If x=y=2z and xyz=256 then what is the value of x?

 Option A: 12

 Option B: 8

 Option C: 16

 Option D: 6

 Option E: 2
Output:
Option B