Ambrosia Foods produces a gourmet condiment that sells for $$16$ per unit. Variable cost is $$6$ per unit, and fixed costs are $$5,000$ per month. If Ambrosia expects to sell $2,000$ units, compute the margin of safety in units. $($Round any intermediate calculations up to the next whole unit.$)$

A$.2,000$ units

B$.1,500$ units

C$.31$ units

D$.500$ units