None of the answer is correct
Step-by-step explanation:
A gold standard ensures a long run tendency toward price stability because the the cost of producing an ounce of gold stays relatively constant overtime
The Golden Standard is a monetary system with a value linked directly to gold in a country's currency or paper cash. Countries agreed with the gold standard to convert paper money into a set gold volume. A State which uses gold, sets a fixed price for gold and at that price buys and sells gold.
The value of the currency is determined by that fixed price.
For example, The value of the dollar would be one in one ounce of Gold if US sets the price for gold at $500 an ounce.