JEE Main 2012 Physics question

Three resistors of 4Ω, 6Ω and 12Ω are connected in parallel and the combination is connected in series with a 1.5 V battery of 1Ω internal resistance. The rate of Joule heating in the 4Ω resistor is

• (1)0.55 W
• (2)0.33 W
• (3)0.25 WCorrect
• (4)0.86 W