PARIS -- European regulators are asking Google to clarify its new privacy policy and make it easier for users to opt out of it.

France's National Commission on Computing and Freedom led a European investigation into Google's new unified policy, which replaces individual policies for its search, email and other services and regulates how it uses the personal data it collects.

The commission said Tuesday that it has three main concerns about the policy: it's not clear enough in explaining to users what data is collected and how it will be used; it's too difficult for users to opt out of data collection; and Google doesn't say how long it will hold onto data.

Google responded that it is reviewing the commission's report but that it believes its policy respects European law.