Extra exam question E7C03

WhyAdding an inductor to a Pi-network to create a Pi-L-network improves harmonic suppression. Adding an inductor to a Pi-network to create a Pi-L-network improves harmonic suppression, giving the network an additional filtering stage beyond what the basic Pi-network alone provides, answer A. It isn't primarily about efficiency, doesn't eliminate a capacitor (it adds a component, an inductor, rather than removing one), and it isn't specifically about extending the impedance transformation range.