Which of the Following Is the Best Definition of "Productivity

Which of the following is the best definition of "productivity"?

A) A measurement of how efficiently resources are converted into goods and services through a production process
B) A measurement of how technology increases the ability of an economy to produce goods and services
C) The ratio of inputs to output
D) The quantity of goods and services produced during a given period of time by labor
E) The total output produced in an economy given its set of resources and the current state of technology