Read the statement and answer the question. 'All the buses at the Jibowu park are air-conditioned.' Which of the following statements, if true, would prove this claim false?

A claim about all the buses is disproved by a single exception at the same park. Saying most are air-conditioned is consistent with the claim if read loosely and does not by itself establish an exception. The age of the buses is irrelevant, and buses at a different park have no bearing on Jibowu.