Definition: 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 (1/2)^22 (1/81)^k = 1/18^22, then k =

 Option A: 8

 Option B: 12

 Option C: 16

 Option D: 24

 Option E: 11

Option E