could i get some help?

Grace Co. can further process Product B to produce Product C. Product B is currently selling for $22 per pound and costs $16 per pound to produce. Product C would sell for $38 per pound and would require an additional cost of $12 per pound to produce. The differential revenue of producing and selling Product Cis Oa. $22 per pound Ob. 538 per pound Oc. 316 per pound Od. $26 per pound