A continuous process is set up for treatment of wastewater. Each day, 10⁵ kg cellulose and 10³ kg bacteria enter in the feed stream, while 10⁴ kg cellulose and 1.5 x 104 kg bacteria leave in the effluent. The rate of cellulose digestion by the bacteria is 7x10⁴ kg/d. The rate of bacteria growth is 2x10⁴ kg/d; the rate of cell death by lysis is 5x10² kg/d. 

A) How many kilograms of cellulose are accumulated in the system each day? 

B) How many kilograms of bacteria cells are accumulated in the system each day?