Daniel Lumber Company incurs a cost of $45 per hundred board feet in processing certain "rough-cut" lumber, which it sells for $51 per hundred board feet. An alternative is to produce a "finished-cut" at a total processing cost of $55 per hundred board feet, which can be sold for $72 per hundred board feet. Which two amounts are used to calculate differential revenue when further processing is chosen? Group of answer choices

$55 - $45

$72 - $55

$72 - $51

$51 - $45