请教大全第15题

            A new phenomena, which is visible at Managua’s major intersections, are waves of vendors and beggars, which include many children and mob cars at the stoplights.

(A) A new phenomena, which is visible at Managua’s major intersections, are waves of vendors and beggars, which include many children and

(B) Visible at Managua’s major intersections are waves of vendors and beggars with many children, new phenomena that

(C) A new phenomenon visible at Managua’s major intersections is waves of vendors and beggars, many of them children, who

(D) Phenomenally new waves of vendors, beggars, and many children are visible at Managua’s major intersections, which

(E) A wave of vendors and beggars, many of whom are children, are visible at Managua’s major intersections, where they are a new phenomenon and
            

       大全15题，实在是觉得摸不找头脑。答案为C，但是many of them children的表达方式我不是很熟悉，是不是独立主格啊？另外其它几项都错在什么地方？多谢赐教！