Which of these macroeconomic variables measures the rate of change of a variable? Choose one or more. BE CAREFUL! A the inflation rate, the percentage increase in the average level of prices (as measured by a price index) over a period of time B the interest rate, or how much savers are paid to save C the labor force participation rate, the percentage of adults in the labor force D the unemployment rate, the percentage of the labor force who are unemployed E the velocity of money, the average number of times a dollar is spent on finished goods and services in a yearHere are two statements about consumer and producer surplus. I Ceteris paribus, the higher is the price, the larger is producer surplus. II Ceteris paribus, the lower is the price, the smaller is consumer surplus. Choose the correct option from the list below. A Neither statement is true. B Only I is true. C Only II is true. D Both statements are true