Aurevia, Brelosia, Cyrenia and Zerathania are four countries with their currencies being Aurels, Brins, Crowns, and Zentars, respectively. The currencies have different exchange values. Crown's currency exchange rate with Zentars $=0.5$, i.e., $1$ Crown is worth $0.5$ Zentars.
Three travelers, Jano, Kira, and Lian set out from Zerathania visiting exactly two of the countries. Each country is visited by exactly two travelers. Each traveler has a unique Flight Cost, which represents the total cost of airfare in traveling to both the countries and back to Zerathania. The Flight Cost of Jano was $4000$ Zentars, while that of the other two travelers were $5000$ and $6000$ Zentars, not necessarily in that order. When visiting a country, a traveler spent either $1000,2000$ or $3000$ in the country's local currency. Each traveler had different spends (in the country's local currency) in the two countries he/she visited. Across all the visits, there were exactly two spends of $1000$ and exactly one spend of $3000$ (in the country's local currency).
The total "Travel Cost" for a traveler is the sum of his/her Flight Cost and the money spent in the countries visited.
The citizens of the four countries with knowledge of these travels made a few observations, with spends measured in their respective local currencies:
- Aurevia citizen: Jano and Kira visited our country, and their Travel Costs were $3500$ and $8000$, respectively.
- Brelosia citizen: Kira and Lian visited our country, spending $2000$ and $3000$ , respectively. Kira's Travel Cost was $4000$.
- Cyrenia citizen: Lian visited our country and her Travel Cost was $36000$.
One Brin is equivalent to how many Crowns?
- $0.5$
- $0.125$
- $4$
- $8$