When the 7th Worker Is Hired,output Increases from 100 Units

Multiple Choice

When the 7th worker is hired,output increases from 100 units per week to 110 units per week.When the 8th worker is hired,output increases from 110 units to 118 units.This is an example of

A) diminishing marginal returns.
B) diminishing marginal cost.
C) decreasing returns to scale.
D) labour-intensive production.
E) increasing returns to scale.