Which two of the following statements about Oklahoma's economy during the 1960s and 1970s are true?
□ The state's wheat farmers suffered because of US foreign policy decisions.
□ OPEC caused the price of natural has in Oklahoma to fall drastically.
□ Cattle and oil were no longer major sectors in Oklahoma's economy.
□ Oklahoma resisted funding efforts that would attract tourism to the state.
□ Deep drilling in the Anadarko Basin helped develop the natural gas industry. ​