The correct option is A
This scandal took place during the term of the former president of the United States, Warren Harding. The then Secretary of the Interior, Albert B. Fall was arrested on bribery charges in 1929. Vault of the teapot is an emergency oil field that was used by the United States Navy in times of shortage. However, many politicians, at that time, believed that oil companies were able to supply oil in emergency situations. Therefore, the decision was made to lease the oil field. In 1921, the President issued an order to transfer control of the teapot vault oil field to the Department of the Interior of the Secretariat of the Navy. In 1922, the leased fall oil production rights to Harry F. Sinclair of Mammoth oil. Instead of having competitive offers for the lease of the land, Caer directly leased the rights. This provision was legal under the Mineral Lease Act of 1920. However, the fall of accepted gifts and interest-free loans in exchange for the lease rights it had issued. The currency exchange was the illegal part of the entire lease scandal. During the same time, the oilfield of another Marina, Elk Hills, was leased in a similar way to Edward L. Doheny of Pan American Petroleum. In exchange for the lease rights, Fall received an interest-free loan of $ 100,000 from Doheny. When the sudden change in the lifestyle of the fall was observed, speculations of a supposed scandal began to emerge. It was the letter from a small Wyoming oil operator to the senator who promoted the investigations. Later, the evidence of Doheny loan was put forth in court, and the fall was found guilty of bribery. Both the reserves were returned to the Navy.