Fill in the blanks with increase, decrease, or remain the same to correctly complete each statement. (1) Contribution margin ratio will with an increase in sales volume. (2) Fixed cost per unit will with an increase in sales volume (within the relevant range). (3) A decrease in the contribution margin will cause the break-even point to (4) Variable cost per unit will with a decrease in sales volume. (5) An increase in fixed costs will cause the break-even point to (6) An increase in sales volume (within the relevant range) will cause total fixed costs to