Based on the information given Tefft's inventory conversion period is:
c.115 days.
Using this formula
Inventory Conversion Period=Average Inventory÷(Cost of Sales÷365 days)
Let plug in the formula
Inventory Conversion Period=$170,000 ÷ ($540,000÷365)
Inventory Conversion Period=$170,000 ÷ (1479.45205479)
Inventory Conversion Period=114.907407408
Inventory Conversion Period=115 days(Approximately)
Inconclusion Tefft's inventory conversion period is: c.115 days.
Learn more about inventory conversion period here:https://brainly.com/question/25687278