A battery charger can drive a current of 5A with 1Ω resistance connected at its output. If it can charge 2 V battery at 7 A rate, its Thevenin's equivalent circuit will be

• A. 7.5 in series with 0.5 Ω resistance
• B. 1.25 V in series with 1.5 Ω resistance
• C. 7.5 V in parallel with 0.5 Ω resistance
• D. 12.5 V in parallel with 1.5 Ω resistance