根据上下文推断生词含义 — 英语词汇题
题目
阅读下面取自公司公告的句子，根据上下文选择最恰当的选项：
Due to unforeseen circumstances, the staff training session originally scheduled for this Friday has been ______ to the following Wednesday, and all registered employees will be notified by email.
A. postponed B. upgraded C. abbreviated D. reimbursed