19 19 the may 4th movement was a patriotic movement that was completely anti-imperialist and anti-feudal. It contains anti-imperialist and anti-feudal tasks. In the slogans put forward in the movement, such as "fighting for sovereignty from outside, punishing national thieves from inside", "canceling Article 21" and "opposing signing a contract with Germany", "fighting for sovereignty from outside" implies anti-imperialism and "fighting for sovereignty from inside".

So choose a.