Which of the following statement correct aqueous solution of oxides of group 1element Li,Na,k etc are a) basic to litmus,b)acidic to litmus, c)amphoteric ,d)none of the above?

Here is a typical equation of an oxide of group IA added to H2O.

K2O + H2O ==> 2KOH(aq)
You know an aqueous solution of KOH what? acid? base? neutral?