Correct option is A
End Condenser method:

Explanation:
- Since the load and the lumped line capacitance are connected in parallel at the receiving end, they both experience the same voltage.
- This means the voltage across the load is equal to the voltage across the lumped capacitance.
- This assumption simplifies calculations while still giving a reasonably accurate performance analysis for medium-length lines (typically between 80 km and 200 km).