The figure given below shows three glass chambers that are connected by valves of negligible volume. At the outset of an experiment, the valves are closed and the chambers contain the gases as detailed in the diagram. All the chambers are at the temperature of `300 K` and external pressure of `1.0 atm`.

Which of the following represents the total kinetic energy of all the gas molecules after both valves are opened?
(`R=0.082 atm L K^(-1) mol^(-1)=8.314 JK^(_1)mol^(-1)`)

Options

A. `2836.2 J`
B. `3280.0 J`
C. `4520.6 J`
D. `4988.4 J`