心理健康教育档案资料中的量化资料是指（）

A.运用观察的方法获得的可进一步统计分析的资料

B.运用实验的方法获得的可进一步统计分析的资料

C.运用定性研究的方法获得的可进一步统计分析的资料

D.运用定量研究的方法获得的可进一步统计分析的资料

A family made a down payment of $75 and borrowed the balance on a set of encyclopedias that cost $400. The balance with interest was paid in 23 monthly payments of $16 each and a final payment of $9.
The amount of interest paid was what percent of the amount borrowed ？（）

A．6%

B．12%

C．14%

D．16%

E．20%