To measure the efficiency with which inventory is used, which of the following ratios should be used?

Question $11$ options:

a$)$

Inventory turnover ratio

b$)$

Inventory holding period

c$)$

Lower of cost or market valuation of inventory

d$)$

$($a$)$ or $($b$),$ but not $($c$)$

e$)$

$($a$),($b$)$ or $($c$)$