Grace Co. can further process Product B to produce Product C. Product B is currently selling for $23 per pound and costs $15 per pound to produce. Product C would sell for $41 per pound and would require an additional cost of $12 per pound to produce. What is the differential revenue of producing and selling Product C?

a.$41 per pound

b.$18 per pound

c.$29 per pound

d.$26 per pound