It takes a company twenty weeks with $200$ workers to build an airplane. Material costs are $$15$ million and overhead costs are $$1\mathrm{.}5$ million. Workers cost $$35$ per hour including benefits and work $40$ hours per week. The airplane sells for $$50$ million. What is the multifactor productivity ratio of the company?

greater than $2\mathrm{.}0$ but less than or equal to $3\mathrm{.}0$

greater than $1\mathrm{.}0$ but less than or equal to $2\mathrm{.}0$

less than $1\mathrm{.}0$

greater than $3\mathrm{.}0$