Which of the following statements about the payback period is FALSE（）

A. The payback period provides a rough measure of a project’ s liquidity and risk.

B. The payback period is the number of years it takes to recover the original cost of the investment.

C. The payback method considers all cash flows throughout the entire life of a project.

单位工程施工图预算的编制方法中，由于我国目前缺乏与综合单价法相匹配的市场价格系统，或者说，计价人员难以方便地获得分项工程单价，因此，综合单价法今后无法在我国广泛使用。（）