Studies show that young people with higher-than-average blood pressure and their families have a history of high blood pressure are more likely than others to develop a severe form of the condition.
(A) and their families have a history of high blood pressure
(B) whose families have a history of high blood pressure
(C) and a history of high blood pressure runs in the family
(D) whose families have a history of high blood pressure running in them（B）
(E) with a history of high blood pressure running in their family
whose 所引导的定语从句不是只能修饰紧接其前的先行词么？我觉得在这里，如果选b，那么其修饰的对象不就变成了pressure了么？
好像语意上又说不通
