With which of the following techniques is energy conservation in a lighting system NOT achievable?

Energy conservation in a lighting system aims to reduce power consumption while maintaining or improving illumination quality.

Among the following options, energy conservation cannot be achieved by replacing electronic ballast with conventional ballast.

• Electronic ballasts operate at higher frequencies (~20-50 kHz), reducing flickering and energy losses.
• Conventional ballasts operate at low frequencies (50/60 Hz), causing higher energy losses as heat.
• Replacing an electronic ballast with a conventional one will increase power consumption, leading to higher energy wastage.