又一道语法,请赐教

By showing that South Africa does not have a free market and is in fact a kind of collectivist welfare state for Whites only, Sowell argues that American conservatives have no valid ideological grounds to be in sympathy with the Pretoria regime.

(A) to be in sympathy with

(B) to sympathize with

(C) for sympathizing with

(D) that they should sympathize with（C）

(E) that they should have sympathy for

这道题里是不是有特定的语法呢??比如 grounds for??

麻烦请按正确格式发帖, thanx.....

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=21698&page=1

idiom: (1)  A be(have) grounds for B（sth./doing sth.)     刘振民E4-8  'A是B的原因'

          (2)  A be grounded in sth.   刘振民11-12  'A是B的原因'

          (3) on the grounds of sth.  （prep.短语）