Tungsten Forging Co, has provided the following information for last year: Tons of metal input Labor hours Overhead costs Tons of forging produced 14,500 $14.5/ton 5,900 $30.9/hour $138,500 8,900 @ selling price of $69/ton The total factor productivity measure is: O $614,100 $531,060 1.16. O 0.86