A company produces 1,250 bicycles in one week. The labor used to make the bicycles was 670 hours. The next week, output was 1,100 bicycles using 620 hours. What was the change in labor productivity? Choose the closest answer.

a. Decreased by 12.0%

b. Increased by 7.5%

c. Decreased by 4.9%

d. Increased by 5.2%