Four friends in the sixth grade were sharing a pizza. They decided that the oldest friend would get the extra piece. Roshni is two months older than Garima, who is three months younger than Niya. Karisma is one month older than Garima. Who should get the extra piece of pizza?

• A.  Garima                      
• B.  Niya
• C.  Karisma                     
• D.  Roshni