请教OG第210题

excellent

210. Scientists have recently discovered what could be the largest and oldest living organism on Earth, a giant fungus that is an interwoven filigree of mushrooms and rootlike tentacles spawned by a single fertilized spore some 10,000 years ago and extending for more than 30 acres in the soil of a Michigan forest.
(A)extending
(B)extends
(C)extended
(D)it extended
(E)is extending

spawned和extending是并列修饰，我非常怕这样的题，大家可否给我一些帮助或提醒？

谢谢！

xiaoyue45084508

spawned和 extending都是修饰filigree 的
一个表被动，被动产生；一个表主动，主动扩张。
且在同位语中，不能出现主谓形式和谓语形式，所以BCDE都不能选。其中(C)extended可能是动词的过去式。

excellent

谢谢！