Suppose that, in year 1, an economy produces 50 sanitizer bottles that sell for $3 each and 100 KN95 masks that sell for $8 each. The next year, the economy produces 80 sanitizer bottles that sell for $3.25 each and 110 KN95 masks that sell for $9 each. using year 1 as the base year, the growth rate of real GDP from year 1 to year 2 is ____%

a. 17.89

b.8

c.31.58

d. 50