If sales volume increases and all other factors remain constant, then the Margin of safety will increase
Explanation:
The margin for safety (MOS) is described as an overall excess of current or expected revenue, expressed either in terms of currency or in units, or as a percentage of total revenues.
One of the main ways to increase the safety margin is through increasing the gross value per unit (if business conditions are favourable) and by reducing the variable cost per unit of the good. This can be accomplished by rising selling costs.