During the 1950s, Ghajna, a Developing Nation, Used Currency Whose

During the 1950s, Ghajna, a developing nation, used currency whose value was determined based on the value of gold. People in Ghajna could present currency worth of 10 Gaj, Gaj being the currency of Ghajna, to a government-approved bank and receive 10 Gaj worth of gold in return. The nation used gold as the base to value its currency. In this scenario, we can say that the nation of Ghajna had the _____ in place during the 1950s.

A) gold variant
B) gold standard
C) gold stock
D) gold bond