细节题。根据文章第三段“…half of the more h fl l mi lion Americans living with HIV are black．“(……50多万以上的HIV携带者是黑人。)及“For women，the situation is even worse．The rate of diagnosis for African-American women is 23 times as high as that for their white counterpart.”(而妇女的情况更糟。美籍非洲妇女的患病率是同类白人女性的23倍。)所以正确答案是D。