You have a SharePoint Server 2010 server farm.

You have a team site named Site1. You create a new SharePoint group named Group1.

You need to configure the permissions of Site1 to meet the following requirements:

* Allow the members of Group1 to add Items.
* Prevent the members of Group1 from deleting Items.

What should you do?

A.
Assign the Contribute permission level to Group1.

B.
Assign the View Only permission level to the Site1 Members group.

C.
Add a new permission level and assign the new permission level to Group1.

D.
Add a new authentication provider and assign the Manage Hierarchy permission level to Group1.

Explanation:
BURGOS MNEMO: "new permission level"