On a Hardware Management Console （HMC） at version 7， an administrator has an LPAR defined with a minimum of 0.1 processors and a maximum of 4 processors. The administrator wants to go from 1 processing unit to 3 processing units for this partition. In order to make the change，  what value should the administrator enter into the add processor resources window？ （）

• A、 2
• B、 3
• C、 1.0
• D、 2.9