We ' ve all heard it before , and I ' m sure some of the other 2D 's felt a little bit of pride , but some of the new students got kind of hushed and worried looking . The teacher went about it in a very good way though . Apparently , Kota and I had Ed during his first semester he ever taught . We were n't aware of it then , because he was excellent .

Options: (I) He was a great teacher and they were sure that he had been doing it for some time. (II) Ed was the one that got them their jobs so they do n't understand how this can be the case. (III) Ed had been the grandson of the former principal so they assumed he had been around longer. (IV) Ed seems far too old to have only just started teaching , and they are in disbelief.
Q: Why are Kota and the speaker surprised that it had been Ed 's first semester ever teaching ?
(I)