The exhibition expenses of museums have risen sharply in the past few years, and there is still a trend of rising. In fact, there are ways for museums to reverse this trend. These museums often receive large donations at home and abroad. Used to improve the economic situation of the museum. Which of the following, if true, would seriously undermine the above conclusion? ["The museum's fundraising has been improved (whether it is wrong). Measures have been perfected, including hosting some commercial fairs, etc.", 'More and more audiences like to browse and visit the museum on holidays.', 'Donations to museums at home and abroad, mainly concentrated in several large museums in China.', 'Donors to the Museum Exhibition Fund often have strict restrictions on the use of donations.']