The degree of a factor's specificity is inversely related to
选项：

A:the amount of time required to redeploy the factor to a different industry.
B:factor quality, with lower quality factors having a lower level of specificity.
C:the cost of the factor as a proportion of the long-run total cost of production.
D:the mobility of the factor, with more mobile factors having less specificity.
E:technology differences between two countries, with a less advanced technology resulting in less factor specificity.