You are the inventory manager for Pharmacy ABC. ABC keeps in stock a given number of rubbing alcohol bottles for sale throughout the year. You calculate that when supply drops down to only $4,999$ alcohol bottles, it should trigger the purchase of a specified number of additional bottles from your supplier. This drop$-$down level of $4,999$ alcohol bottles constitutes ABC's $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$

Group of answer choices

reorder point.

economic order quantity.

inventory turnover ratio.

stock$-$out cost.

overstock cost.

specific identification $($SI$)$ method

LIFO $($last in$,$ first out$)$ inventory