Changing the MTBF for a product has a direct impact on manufacturing cost because:a. MTBF is one factor that drives material costs. Higher MTBF translates into higher material costs (and mor@reliable products) while lower MTBF translates into lower costs (and less reliable products).b. Higher MTBF means lower prices due to bulk buyingc. Higher MTBF increases marketing expenses (upper clientele)d. Higher MTBF changes require lower investments in the factory, which drive up the cost of your product.