Why is the constant gross margin percentage NRV method sometimes called a"joint cost and a profitallocation" method?

The constantgross-margin percentage NRVmethod:

A.

takes account of theproduct's gross margin upon production completion.

B.

takes account of thepost-splitoff point"profit" contribution earned on individualproducts, in addition to the joint costs.

C.

take account of thepost-splitoff point"profit" contribution earned on individual products only.

D.

takes account of the joint costs only.