Kramerica Industries is weighting its options to source Widgets.

Supplier A would cost $$3000$ per order plus $$2\mathrm{.}50$ per Widget ordered. Supplier B charges $$6$ per Widget, Supplier C charges $$5$ per Widget, but requires buyers to pay for a minimum of $400$ units $($even if they require less than $400).$ Shipping costs are the same for all suppliers.

Select all true statements abGut sourcing Widgets. I suggest you plot the graph $$

Supplier B is optimal when purchasing $380$ Widgets

Supplier A is optimal when buying $1500$ Widgets

When buying $1200$ Widgets, there are multiple optimal suppliers from which to choose

Supplier $C$ is optimal when ordering $300$ Widgets