4. (True or False) State whether the following statements are true or false, then explain. a) (1 point) "The lower the Gini coefficient, the higher the inequality." b) (3 points) "Suppose your return on retirement account is 8%, and inflation rate is 9%, then you are still earning more." c) (3 points) "If CPI reads 300 in August 2022 and 309 in August 2023, then inflation rate is 9%." d) (5 points) "A BMW car costs $40,000 this year, but only $8,000 in 1980. It's more expensive today than in 1980 to buy a BMW." (Suppose PCE price index is 30 and 120 in 1980 and 2023, respectively.) e) (5 points) "Jake is a full-time worker. Today, he is fired from his job, and he suddenly decides to retire. Due to this, there is no change to unemployment rate or labor force participation rate