Please confirm the correct answers

D Question 15 4 pts GDP is calculated by summing up A. the total quantity of goods and services produced in the economy. B. the total quantity of goods and services produced in the economy during a given time period. O C. the total market value of goods and services newly produced in the economy. D. the total market value of final goods and services newly produced in the economy during a given time period. D Question 16 4 pts Investment includes: A. an increase in corporate stock volumes during the year. B. the purchase of medical supplies by the National Guard. O C. an increase in government purchases. D. an increase in business inventories