You are the Office 365 administrator for your company. The company uses Office 365 Pro Plus and has multiple Microsoft S

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You are the Office 365 administrator for your company. The company uses Office 365 Pro Plus and has multiple Microsoft SharePoint Online sites.
The company recently started a project that requires employees to collaborate with external users on the development of a set of documents that are stored in a team site.
You need to ensure that external users can access and edit the documents without affecting the security of other content.
What should you do?

A. Create a new SharePoint team site and share it by using the Share function and adding the external users to the Visitors group.
B. Create a new SharePoint team site and share it by using the Share function and adding the external users to the Contributors group.
C. Share the existing SharePoint team site by using the Share function and adding the external users to the Visitors group.
D. Share the existing SharePoint team site by using the Share function and adding the external users to the Contributors group.