Question

Which of the following is a counterexample to the statement, “If a person has brown eyes, then everyone in that person’s family must have brown eyes.”?

Deborah has brown eyes, but her brother has blue eyes.

Jamal has green eyes, and the rest of his family has hazel eyes.

Sean has brown eyes, but he wears colored contact lenses.

Tamika has brown eyes, and the rest of her family also has brown eyes.

I think it's A but it could be B.