prep 1#201

201.
            (25167-!-item-!-188;#058&001486)     (GWD30-Q4)

The three women, liberal activists who strongly support legislation in favor of civil rights and environmental protection, have consistently received labor's unqualifying support. 

A. have consistently received labor's unqualifying support

B. are consistently receiving the unqualifying support of labor

C. have consistently received the unqualified support of labor

D. receive consistent and unqualified support by labor

E. are receiving consistent and unqualified support by labor

我
        选的是C，当时想的是

1 觉得原句中consistently修饰的是received，如果改为形容词就修饰的是support，感觉改变了原意，但是，现在又觉得2句话差不多意思，请问有什么区别？

2 另外还有labor's unqualifying support与unqualifying support of labor有什么区别

3 再有就是为什么要用完成时态，谢谢～