Hey Gamer, have you read the theory for strong electrolytes and weak electrolytes? Infinite dilution has a limiting molar conductivity. That's what lambda 0 is. You can check my sessions out if you want. But in short, this is the idea. So if you extrapolate this line B, it hits the y-axis. At C equal to 0, it has some value, not 0, but reaching 0.