Mohit, Mohan, Ram and Sunny leave their respective homes at 7:30 a.m. for the school. Mohit reaches school at 7:45 a.m. Mohan reaches at 7:40 a.m. Ram reaches at 7:50 a.m. and Sunny reaches at 7:39 a.m. Who reaches earliest to the school and who reaches last respectively?

• A.  Sunny and Ram          
• B.  Mohit and Mohan
• C.  Sunny and Mohit        
• D.  Mohan and Ram