Which sentence uses a semicolon correctly?

Question

(Remember, a semicolon joins two complete sentences.)

The king did not allow his daughter to date; not the right thing to do.

It didn't matter that he might already have a wife; the king allowed no such arrangements.

The princess was mad at her father for not liking her lover; eventually forgave him.

Answer 1

It didn't matter that he might already have a wife; the king allowed no such arrangements.