Which of the Following Statements Is True Concerning Productivity

Which of the following statements is true concerning productivity?

A) The lower the partial productivity ratio, the greater the productivity.
B) Productivity has increased when the partial productivity is high.
C) Prices of inputs are incorporated in the partial productivity ratio.
D) The partial productivity ratio measures the number of outputs produced per multiple input.
E) The partial productivity ratio measures the amount of a single output produced with multiple inputs.