For the circuit shown in the figure
A. The current I through the battery is 7.5 mA
B. the potential difference across `R_(L)" is " 18 V`
C. ratio of powers dissipated in `R_(1)" and "R_(2)` is 3
D. if `R_(1)" and " R_(2)` are interchanged, magnitude of the power dissipated in `R_(L)` will decrease by a factor of 9
