OG的SC第56题请教

我看不懂56题的解答。不明白为什么E不对。谢谢大牛帮我看一下：

56. Architects and stonemasons, huge palace and temple clusters were built by the Maya without benefit of the wheel or animal transport.

A. huge palace and temple clusters were built by the Maya without benefit of the wheel or animal transport
B. without the benefits of animal transport or the wheel, huge palace and temple clusters were built by the Maya
C.the Maya built huge palace and temple clusters without the benefit of animal transport or the wheel
D.there were built, without the benefit of the wheel or animal transport, huge palace and temple clusters by the Maya
E.were the Maya who, without the benefit of the wheel or animal transport, built huge palace and temple clusters

A, B, and D illogically suggest that the palace and temple clusters were architects and stonemasons. For the modification to be logical. Architects and stonemasons must immediately precede the Maya, the noun phrase it is meant to modify. A, B, and D also use the passive verb form were built, which produces unnecessary awkwardness and wordiness. E is awkwardly phrased and produces a sentence fragment, because the appositive noun phrase Architects and stonemasons cannot serve as the subject of were the Maya. C, the best answer, places the Maya immediately after its modifier and uses the active verb form built.

E 好象were之前有个逗号 这个逗号是多余的吧

偶瞎讲的

对，逗号是个问题

另外

Architects and stonemasons，是泛指，没道理的，好像全世界的建筑师和......

觉得,Architects and stonemasons，作为前置同位语 修饰 the Maya,

不知道对不对?请大家指教!

5楼对

如果是E, 想想整个句子的重点，是在说the Maya were Architects and stonemasons? 还是 the Maya built huge palace and temple clusters？

这里只能用同位语，而不是定语从句