A battery charger can drive a current of 5 A into a 1 ohm resistance connected at its output terminals. If it is able to charge an ideal 2 V battery at 7 A rate, then its Thevenin's equivalent will be

A. 7.5 V in series with 0.5 ohm

B. 12.5 V in series with 1.5 ohm

C. 7.5 V in parallel with 0.5 ohm

D. 1.25 V in parallel with 1.5 ohm

Answer: Option B