You engineer bacteria to secrete a costly enzyme to degrade cellulose. Extracellular degradation of cellulose generates sugar that the bacteria eat. You observe that in a well-mixed bioreactor with cellulose, the population of bacteria grows well for several generations, but then ends up dying off. A) Give a proximate mechanistic explanation for this observation. (2 points) B) Give an ultimate evolutionary explanation for this observation (2 point) C) Would you expect removing the ultimate or the proximate cause of the population crash to have a longer-term effect? Explain your answer