The additional benefit of producing one more roast beef sandwich at a local deli is $2. The additional cost of producing one more roast beef sandwich is $3. To improve allocative efficiency:

A. producers should produce at least one more roast beef sandwich because MB > MC.
B. producers should produce at least one more roast beef sandwich because MC > MB.
C. producers should not produce one more roast beef sandwich because MB > MC.
D. producers should not produce one more roast beef sandwich because MC > MB.