Productivity is defined as the ratio of outputs of a production process to the inputs that are used. Consider a process that currently produces 2,000 units of output wit of labor per day. This process can be redesigned to produce 2,520 units of output reduiring 600 labor hours per day. The percentage change in productivity from h 500 hours redesigning the process is: a. 5% O b. 10% . 20% O d. 26%