问题:
[单选题]A () indicates the constant number of hours of labor required to produce one unit of output.DHf答案窝(daanwo.com)-大学生作业答案及考资分享平台
Arelative supplyDHf答案窝(daanwo.com)-大学生作业答案及考资分享平台
Bunit labor requirementDHf答案窝(daanwo.com)-大学生作业答案及考资分享平台
Crelative demandDHf答案窝(daanwo.com)-大学生作业答案及考资分享平台
Dsupply