Answer:
D. Both a and b
Step-by-step explanation:
The average product of worker is a term of economy in which we identify the output per worker. This function enables to understand the output by each worker. The function can be written as
AP q/L
Where q is output and L is number of worker.
It enables to understand the average product of output over the input. The average product is useful to identify the production at specific level of input. This is a common measure for labor productivity.