问题详情

If patrons have Central Library materials due to be returned while it is closed, which of the following method is recommended？
A．Leaving materials in the Central Library"s outside depositories
B．Renewing materials through the Central Library"s website
C．Calling a branch library on December 25th
D．Mailing the materials to the Central Library请帮忙给出正确答案和分析，谢谢！