Which of the following best explains why slow turning items may not be profitable at a brick-and-mortar retailer? If tums are low, days-of-supply will also be low. If turns are low, the gross margin will also be low. If turns are low, the setup costs to stock the shelf will be high. If turns are low, blocking and starving are more likely to occur. If turns are low, units spend a long time on the retailer's shelves.