Oakwood Hospital is considering using ABC analysis to classify laboratory SKUs into three categories: those that will be delivered daily from its supplier $($Class A items$),$ those that will be controlled using a continuous review system $($B items$),$ and those that will be held in a two$-$bin system $($C items$).$ The following table shows the annual dollar usage for a sample of eight SKUs. Rank the SKUs, and assign them to their appropriate category. SKU Unit Cost Count

$1$ $$3\mathrm{.}00500$

$2$ $$0\mathrm{.}0218000$

$3$ $$0\mathrm{.}7510000$

$4$ $$40\mathrm{.}0075$

$5$ $$0\mathrm{.}0520000$

$6$ $$0\mathrm{.}153000$

$7$ $$0\mathrm{.}45150000$