Your company is implementing a new production line for making solar panels. The company has two main alternatives in setting up the production line: either use highly automated equipment or use general$-$purpose equipment. Cost information for these two options is as follows:

$\backslash$table$[[$ALTERNATIVE$,$FIXED COST,VARIABLE COST$],[$Automated Equipment,$$900,000$ per year,$$50$ per unit$],[$General$-$Purpose Equipment,$$150,000$ per year,$$100$ per unit$]]$

Use Scenario $2\mathrm{.}6$ to solve this riddle. For what range of output is the General$-$Purpose Equipment the low$-$cost option?

$15,000$ or more units per year

$0-10,000$ units per year

$0-25,000$ units per year

$0-15,000$ or more units per year