Across

$2.$

$(2$ words$)$ Multiple end$-$products produced from a single raw material and a common production process.

$3.$

$(2$ words$)$ For joint products, all costs incurred prior to the point at which the two products are separately identifiable $($known as the split$-$off point$).$

$4.$

$(2$ words$)$ The potential benefit that is lost when one course of action is chosen rather than an alternative course of action.

Down

$1.$

$(2$ words$)$ A cost incurred in the past that cannot be changed or avoided by any present or future decision.