Answer: C — Britain puts far more policy costs on industrial bills

Explanation: Britain’s high industrial electricity prices aren’t simply because generating electricity here costs more. Policy costs added to electricity bills have historically been much higher for large UK industrial users than for competitors in countries such as France and Germany.

That matters to investors because electricity is a major input for industries such as steel, chemicals and advanced manufacturing. Cut those costs and you don’t just improve a factory’s margins — you can make whole industries more competitive, which is why cheaper power could have knock-on benefits throughout Britain’s industrial supply chain.