A Pitot tube traverse was done on a 16 inch x 12 inch duct. The following velocity pressure readings(in inches) were taken: 0.09, 0.16, 0.24, 0.14, 0.15, 0.31, 0.30, 0.12, 0.13, 0.32, 0.28, 0.14, 0.16, 0.13, 0.11,0.17. What is the airflow in cfm?a. 2243b. 1718c. 1686d. 2458e. 4005