Quail Co Can Further Process Product B to Produce Product C

Quail Co. can further process Product B to produce Product C Product B is currently selling for $60 per pound and costs $42 per pound to produce. Product C would sell for $92 per pound and would require an additional cost of $13 per pound to produce. What is the differential revenue of producing and selling Product C?

A) $32 per pound
B) $42 per pound
C) $50 per pound
D) $18 per pound