The manager is considering whether to open a second concessions stand to reduce the number of lost sales. He estimates that each customer on average produces a profit of $$2$ before accounting for the fixed operation cost of a stand. The fixed operation cost is $$5$ per movie and stand. The food at the concession stand is durable $($i$.$e$.,$ there is no overstocking cost$).$ Should the cinema open a second concession stand or would doing so decrease their profit? $($Hint: The profit without fixed operating costs per stand for either option can be calculated using the loss function for the Poisson distributions below. $)$