challenge: According to the re-categorization of Indian Railway stations, what is the estimated earnings range of a Non-Suburban Grade-5 (NSG-5) railway station?
  
  A. ₹10 lakh - ₹1 crore
  B. ₹1 crore - ₹10 crore
  C. ₹10 crore - ₹50 crore
  D. ₹50 crore - ₹100 crore
  Answer: 