challenge: Where is Okara Cantonment Railway Station located?
  
  A. In Lahore city, Okara district of Punjab province, Pakistan
  B. In Okara cantonment, 5 km away from Okara city, Okara district of Punjab province, Pakistan
  C. In Okara cantonment, 10 km away from Okara city, Okara district of Punjab province, Pakistan
  D. In Okara city, Okara district of Punjab province, Pakistan
  Answer: 