data are available:

Domestic unit sales price

$$23$

Unit manufacturing costs:

$\backslash$table$[[$Variable$,11],[$Fixed$,5]]$

The differential revenue from the acceptance of the offer is

a$.$ $$554,302$

b$.$ $$385,{600}^{-}$

c$.$ $$168,700$

d$.$ $$939,900$