The correct answer is: A. Cash : Vault
A treasure is a valuable collection of objects, typically gold, silver, or jewels, often hidden or buried. A chest is a large box with a lid, typically used for storing valuables. A cash is a sum of money, especially in coins or notes. A vault is a strong room or safe, especially for storing money or valuables.
The relationship between treasure and chest is that a chest is a container for a treasure. The relationship between cash and vault is that a vault is a container for cash.
The other options do not have the same relationship as the original pair of words. Finance is the management of money, while exchequer is a government department responsible for collecting taxes and managing public money. Coins are pieces of metal stamped with a design and used as money, while mint is a place where coins are made. Money is a medium of exchange, while account is a record of financial transactions.