Which event from english history came to be called the restoration?

a. the execution of charles i and restoration of parliamentary democracy in the english commonwealth
b. the return of charles ii to england from exile in france and his coronation as the english monarch
c. the crowning of the protestant william iii and his wife, mary ii, as joint rulers of england
d. the brief reinstatement of charles i on the throne after a temporary victory over oliver cromwell’s army