The version of Okun's law studied in Chapter 10 assumes that when the actual unemployment rate is equal to the natural unemployment rate, the growth rate of real GDP is 3 percent oyer a year. If the unemployment rate falls 1 percentage points below the natural unemployment rate over a year, Okun's law predicts that real GDP would rise by _______ percentage points and the GDP growth rate for that year will be ________ percent. D a. 4;? '3 b. 2; l '3 C. l; 2 '3 d. 2; 5