In the following circuit, the battery has a voltage of 40 V. At some instant in time, the voltage across the resistor is found to be 10 V. At this instant, what is the rate of change of current with respect to time?
A. 5 A/s
B. 10 A/s
C. 15 A/s
D. 20 A/s
E. 25 A/s
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