【求助贴】请教大家关于OG18-799的平行问题

While most of the earliest known ball courts in Mesoamerica date to 900-400 B.C., waterlogged latex balls found at El Manati and representations of ballplayers painted on ceramics found at San Lorenzo attest to the fact that the Mesoamerican ballgame was well established by the mid-thirteenth century B.C.

A. waterlogged latex balls found at El Manati and representations of ballplayers painted on ceramics found at San Lorenzo attest
B. waterlogged latex balls found at El Manati and the painting of representations of ballplayers on ceramics found at San Lorenzo attests
C. waterlogged latex balls found at El Manati and ceramics painted with representations of ballplayers found at San Lorenzo attests
D. the finding of waterlogged latex balls at El Manati and the painting of representations of ballplayers on ceramics found at San Lorenzo attests

E. the finding of waterlogged latex balls at El Manati and of representations of ballplayers painted on ceramics at San Lorenzo attest

答案是A.

我知道这道题凭SV agreement 可以很快做出来，但是还是想弄清楚题中的平行关系到底是什么。

之前在站内百度上找了很久也没有找到合适的解析，所以来请教各位了。

提前谢谢大家~