一道老OG求达人解释

vinbobo

In the last few years, the number of convicted criminals given community service sentences, which allow the criminals to remain unconfined while they perform specific jobs benefiting the public, have risen dramatically.

(A) sentences, which allow the criminals to remain unconfined while they perform specific jobs benefiting the public, have
(B) sentences, performing specific jobs that benefit the public while being allowed to remain unconfined, have
(C) sentences, performing specific jobs beneficial to the public while they are allowed to remain unconfined, have
(D) sentences which allow them to remain unconfined in their performing of specific jobs beneficial to the public has
(E) sentences allowing them to remain unconfined while performing specific jobs that benefit the public has

D除了语意错误，是否语法上也有问题 “in their performing of specific jobs beneficial to ” 这个结构有哪些问题？

E中while的省略没有问题么？他的逻辑主语和前面不定式相同，而不是主句相同