JEE Main 2014 Physics question

A Carnot engine absorbs 1000 J of heat energy from a reservoir at 127 °C and rejects 600 J of heat energy during each cycle. The efficiency of engine and temperature of sink will be:

• (1)20% and −43 °C
• (2)40% and −33 °CCorrect
• (3)50% and −20 °C
• (4)70% and −10 °C