You are writing a memo to employees announcing the loss of free parking. Which of the following would be the best closing sentence in this bad-news memo to employees?
选项：

A:We understand your disappointment with this decision.;
B:If you would like to sign up for our ride-sharing program to save on parking expenses, please see the receptionist.;
C:We trust you will continue to do your best in spite of the present difficult situation.;
D:Thank you in advance for your cooperation.