In Lecture $5$ ?we extended the newsvendor solution to the infinite $-$ horizon

problem under the assumption of lost sales. Now consider the finite $-$ horizon version of

this problem with N periods where any item that cannot be sold in the last period N

can be returned to the suppler for salvage value r at the beginning of period N $+1.$

Can we still extend the newsvendor solution to this finite $-$ horizon problem when the unit

salvage value r is equal to the unit procurement cost c $.$ ?Why or why not?