大全117——benefit的用法

117.   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（C）
(E)
were the Maya who, without the benefit of the wheel or animal transport, built
huge palace and temple clusters

对答案没有疑问。

文中出现了三种benefit的形式：benefit、the benefit、the benefits，有什么区别吗？

是不是三种用法都是正确的？Longman中说benefit是countable and unaccountable；

请教NN给指点一下。