Which of the Following Statements Is True of Productivity Factors

Multiple Choice

Which of the following statements is true of productivity factors?

A) Partial-productivity focus on a multiple inputs simultaneously.
B) Total factor productivity (TFP) focus on a single input.
C) It is the ratio of the quantity of output produced to the costs of all inputs used based on current prices.
D) Comparable data for total factor productivity measurements are easily available.