60 Mary tried to collect on an airline trip insurance policy she had purchased, but was refused by the insurancecompany on the ground that the policy applied only to a trip on “scheduled airline” and that “technically” under some obscure regulations Mary’s flight was not “scheduled,” even though she had every reason to believe that it was. The court held in favor of Mary on the ground that ordinary insurance buyer’s understanding should apply, since this was a contract______   .
(A) of beneficence
(B) of adhesion
(C) for deed
(D) under seal