Which of the following best paraphrases the underlined sentence in paragraph 4?

Opponents suggest that countries manufacturing plastic packaging must bear the actual expenses of treating it and fund their own recycling systems.

Critics believe that nations creating plastic packaging should lower the disposal costs by heavily relying on international recycling infrastructure.

It is argued that countries importing plastic packaging ought to pay the true costs of throwing it away and improve domestic recycling.

People claim that countries producing plastic packaging should internalize the disposal costs so that they can export more waste to other nations.