was expected 还是 is expected

有一道选择题：

—Did you telephone the manager’s office?

—Yes. He _______ back before 9 o’clock this morning.

A. was expected B. expected C. is expecting D. is expected

答案给的是A，也有给D的。到底是什么呢？求解答。谢谢！

电话已经在早上打过了，当时打电话是由于觉得他早上会回来。be expected是指打电话的时候，故需要用通常过去时。用目前时态是不对的。