________ country’s advocacy groups filed $20 trillion lawsuit against Chinese government ?

(a) USA
(b) South Korea
(c) India
(d) UK

Freedom Watch, a Washington-based advocacy group, and Buzz Photos, a Texas company that specializes in high school sports photography, have filed a class-action lawsuit against the Chinese government demanding $20 trillion in compensation for the damages caused by the novel coronavirus, or COVID-19, pandemic.