Larry's auto body repair shop had revenues that averaged $60,000 per week in april and $50,000 per week in may. during both months, the shop employed six full‐time (40 hours/week) workers. in april the firm also had four part‐time workers working 25 hours per week but in may there were only 2 part‐time workers and they only worked 10 hours per week. what is the percentage change in labor productivity from april to may for larry's auto body repair?

(a) -20.00%
(b) -15.82%
(c) 8.95%
(d) 2.3%
(e) -25.00%