Potential difference and power — practice question

A cell with negligible internal resistance is connected to resistors $R_1$, $R_2$ and $R_3$, as illustrated. The cell supplies energy to the circuit, and energy is dissipated in the resistors. Which word equation must be correct?

• Apower loss in $R_1$ = power loss in $R_2$ + power loss in $R_3$
• Bpower loss in $R_2$ = power loss in $R_3$
• Cpower output of cell = power loss in $R_1$ + power loss in $R_2$ + power loss in $R_3$
• Dpower output of cell = power loss in $R_1$