A charity called on companies to donate tents to an area hit by torrential rain  As a token of gratitude, a certain area asked the organization which companies had donated  After investigation, we found that: (1) none of the four enterprises donated; (2) the D enterprise did not donate; (3) at least one enterprise of the B enterprise and the D enterprise did not donate; and (4) there were indeed corporate donations among the four enterprises
It was later learned that two of the above four situations were true and two were false
Enterprise A did not donate