Suppose the Net Energy Value of Food Item a Is

Suppose the net energy value of food item A is 6 kcal/s while the net energy value of food item B is 4 kcal/s. Obtaining item A takes 2 s and processing takes 2 s. Item B takes 2 s to obtain and 2 s to process. The difference in profitability between the two food items is

A) 0 kcal/s.
B) 0.5 kcal/s.
C) 1.0 kcal/s.
D) 2.5 kcal/s.