Which of the following factors is most likely to cause the SAS curve to shift to the left (inward)? Question 15Select one: A. An increase in the prices of key raw materials, such as oil and metals, used in the production process. B. A decrease in government regulations and red tape that make it more difficult for businesses to operate efficiently. C. An inward shift of the overall consumer demand for goods and services in the economy. D. An outward shift of the overall consumer demand for goods and services in the economy. E. A decrease in the interest rates set by the central bank to control inflation