Keltner Enterprises is considering investing in a new packing machine. The new machine will provide annual cash operating inflows of $$12,300$ for $5$ years. The cost of the machine is $$42,300$ and it can be sold at the end of its $5-$year useful life for $$6,800.$ Keltner's required rate of return is $10\%.$ What is the machine's net present value?

a$.($$$105)$

b$.$ $$13,211$

c$.$ $$8,549$

d$.$ $$15,278$