The Weekly output of a doors from a garage door manufacturer is shown below, along with data for labor and material input. The standard value of the doors is $125 per unit. Overhead is charged weekly at the rate of $1500 plus 0.5 times the direct labor cost. Assume a 40-hour work week and an hourly wage of $16. Material cost is $10 per foot. What is the multifactor productivity for week 4? Week Output 1 412 # of Workers 9 Material (ft) 2840 2 364 5 2550 3 392 5 2720 4 408 6 2790 O 1.444 1.439 O 1.463 O 1.451