Answer:
Option A and B are the correct option.
Step-by-step explanation:
Schema.RecordTypeInfo and Schema.PicklistEntry is required to demonstrate the possible information type for the Case object and list values for the Case.Status field. Both the Case object and Case.Status fields are required on the page of the visualforce. So, that's why the following options are correct.
RecordTypeInfo includes functions for getting data about the record type for a Object with related record type.
Using the function getPicklistValues returns a Schema. PicklistEntry object from the explain outcome field.