12. Refer to the article shown below titled \"The Nixon Shock Heard 'Round the World". The graph shows value of a dollar at the end of 1970 decreased in real terms to $0.18 by the middle of 2011. Assume the ination rate was zero from the middle of 2011 to the end of 2011 so that the purchasing power of the dollar remained at $0.18 at the end of 2011. What was the average ination rate in the U.S. over the 41 years shown in the table? a. 2.14% b. 4.10% c. 4.27% d. 4.56% e. 4.68%