Answer:
The correct answer is that: it can be proven, or disproven, even though it might be incorrect.
Explanation:
An opinion is a statement that comes from subjective information, from thoughts, emotions and beliefs that are unique to a person, or a group of people. Usually, unless it counts as informed opinion, an opinion, in essence, does not need verifiable fact, or data, to be issued, since it expresses what a person subjectively interprets from something. In this case, although the information is incorrect regarding the number of stripes on the American flag, the statement comes from verifiable, provable fact, which either supports it, or disproves it. This is why the correct answer is the first one.