A. The file USPopulation. txt is provided with this assignment. The file contains the midyear population of the United States, in thousands, during the years 1950 through 1990. The first line in the file contains the population for 1950, the second line contains the population for 1951, and so forth. Write a program that will a. Read the file contents into a list named population and create two additional lists: i. A list named year with a list of the years from 1950 to 1989 ii. A list named pop_changes which stores the population changes from one year to the next. The change is the difference from one year to the next. The first change is for the year 1950 and is 2114 (153982 in 1951 minus 151868 in 1950). b. Display: i. the average population during the time period 1950 to 1990 ii. the overall population change from 1950 to 1990 iii. The average annual change in population during the time period iv. The year with greatest change in population during the time period v. The year with smallest change in population during the time period c. Prompt the user to input a year. Report: i. the population for that year ii. the change from the previous year iii. the change for the following year