please answer:::

Rubble Inc. has an old crushing machine. It requires a consistent level of maintenance to keep it running well and business is strong so they have to occasionally decline an order due to not being able to crush enough material. They are considering upgrading to a crushing-and-sorting dual machine that would complete two processes instead of just one and reduce maintenance costs. Which of these items is relevant to the decision of whether to replace the old crushing machine? Select all that are relevant. useful life of old crushing machine maintenance cost of old crushing machine lost contribution margin during down time depreciation costs of new crushing-and-sorting machine cost of new crushing-and-sorting machine cost of factory overhead in crushing department direct labor assigned to crushing and sorting Rubble Inc. has an old crushing machine. It requires a consistent level of maintenance to keep it running well and business is strong so they have to occasionally decline an order due to not being able to crush enough material. They are considering upgrading to a crushing-and-sorting dual machine that would complete two processes instead of just one and reduce maintenance costs. Which of these items is relevant to the decision of whether to replace the old crushing machine? Select all that are relevant. cost of old crushing machine maintenance cost of old crushing machine cost of crushing-and-sorting machine cost of old sorting machine depreciation of old crushing and sorting machine contribution margin of declined orders