再问prohibit的用法

In an attempt to guarantee the security of its innovative water purification method, the company required each employee to sign a confidentiality agreement prohibiting that its water purification methods be disclosed to companies using an analogous purification process.

1. prohibiting that its water purification methods be disclosed to companies
2. prohibiting them from the disclosing of its water purification methods to any company
3. prohibiting disclosure of its water purification methods to any company
4. that would prohibit them from disclosure of its water purification methods to companies
5. that would prohibit its water purification methods to be disclosed to a company

答案是E。请问这里的 prohibit sth to be done 符合语法规则吗？

下周就考了，帮忙解答一下吧

就两个用法

prohibit from doing sth

prohibit sth

呵呵，不好意思忘记了，是GWD31-16-34