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.
                    
                
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                Aprohibiting that its water purification methods be disclosed to companies
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                Bprohibiting them from the disclosing of its water purification methods to any company
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                Cprohibiting disclosure of its water purification methods to any company
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                Dthat would prohibit them from disclosure of its water purification methods to companies
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                Ethat would prohibit its water purification methods to be disclosed to a company
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