Correct option is A
A
Load Duration Curve (LDC) is a graphical representation of how the electrical load varies over time. It is a plot that shows the relationship between the load (usually in megawatts or kilowatts) and the time duration for which the load remains at or above a particular level. The load is arranged in descending order with respect to time.
The curve is used in power system planning and operation to understand the load pattern and to ensure reliable supply by estimating how long different loads persist within a specific period.