A single firm in Aluminum Valley hires computer coders. The market supply of computer coder labor is given here. Wage (per hour) Quantity of labor supplied Total cost of labor \[\$10\] \[1\] \[\$10\] \[\$20\] \[2\] \[\$40\] \[\$30\] \[3\] \[\$90\] \[\$40\] \[4\] \[\$160\] \[\$50\] \[5\] \[\$250\] What is the marginal factor cost of the fifth worker? Choose 1 answer: Choose 1 answer: (Choice A) \[\$250\] A \[\$250\] (Choice B) \[\$50\] B \[\$50\] (Choice C) \[\$90\] C \[\$90\] (Choice D) \[\$70\] D \[\$70\] (Choice E) \[\$10\] E \[\$10\]