challenge: What is the primary goal of Professor Voth's 'multiscale coarse-graining' method?
  
  A. To reduce the resolution of molecular-scale entities while retaining key interaction information
  B. To simulate the behavior of individual atoms in complex systems
  C. To increase the resolution of molecular-scale entities in complex systems
  D. To model the behavior of macroscopic systems without considering molecular-scale entities
  Answer: 