Suppose that papers for a newspaper stand cost $$0\mathrm{.}40$ and sell for $$0\mathrm{.}80.$ They currently have no salvage value. If the stand owner is able to find an outlet that would provide a salvage value of $$0\mathrm{.}10,$ what would be the increase in service level?

Select one:

a$.0$

b$.1$

c$.\mathrm{.}07$

d$.$ unable to determine given only the above information

e$.\mathrm{.}5$