$\backslash$table$[[$Input Quantity,$\backslash$table$[[$Real Domestic$],[$Output$]]],[100,200],[150,300],[200,400]]$

The table gives information about the relationship between input quantities and real domestic output in a hypothetical economy. If the price of each input is $$1,$ the per$-$unit cost of production in the economy is

Multiple Choice

$$2\mathrm{.}50.$

$$2\mathrm{.}00.$

$$0\mathrm{.}50.$

$$0\mathrm{.}10.$