(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
答案是C
我在選的時候把全部的答案都劃掉了

不過看到答案是(C)的時候還是覺得很不懂,
"many of them children"聽起來怪怪的,覺得少了個動詞,
這個動詞是怎麼被省略的呢?
請前輩們幫我解答一下,謝謝
