challenge: What is the purpose of the 'RNS Point' row in the table describing the cake's parts and their values?
  
  A. To list the ingredients used in each part of the cake
  B. To calculate the total value of the cake for Alice
  C. To represent the point where the Radon-Nikodym set is achieved
  D. To determine the optimal way to divide the cake between Alice and George
  Answer: 