Assume That,over a Period of Time,an Owl Consumes 5000 J

Multiple Choice

Assume that,over a period of time,an owl consumes 5000 J of animal matter.The owl loses 2000 J in feces and uses 100 J for cellular respiration.The remainder of the energy was used for growth and reproduction.What is the production efficiency based on the energy stored in assimilated food for this owl?

A) 50%
B) 40%
C) 70%
D) 30%
E) 10%