Liberty Services is now at the end of the final year of a project. The equipment was purchased prior to the new tax law and originally cost $$10,000,$ of which $75\%$ has been depreciated. The firm can sell the used equipment today for $$5,500,$ and its tax rate is $25\%.$ What is the equipment's after$-$tax salvage value for use in a capital budgeting analysis? Note that if the equipment's final market value is less than its book value, the firm will receive a tax credit as a result of the sale that will offset expenses from the company's other projects.

$$ a$.$ $$6,250$

b$.$ $$4,125$

c$.$ $$4,750$

d$.$ $$5,500$

e$.$ $$3,250$