关于合同履行的下列说法中，正确的是（）。

A. 正确
B. 错误

A. Today's seminar was informative.
B. Another seminar will take place the following week.
C. Next week's seminar is on a different topic.
D. There will be two seminars next week.

A. wisdom
B. foresight
C. illusion
D. vision