Which of the following statements is true?

A) The lower or first quartile is labeled Q₁ and is equal to the 25^th percentile.
B) The second quartile is labeled Q₂ and is equal to the median.
C) The upper or third quartile is labeled Q₃ and is equal to the 75^th percentile.
D) All of these choices are true.

Purrfect Pet Shop takes inventory semiannually and bases inventory on selling price. Beginning inventory for the year was $67,320. Inventory at the end of the first six months was $79,680. Ending inventory for the year was $82,500. Net sales for the year equal $183,750. Compute the inventory turnover at retail.​