Identify the segment that contains a grammatical error. If there is no error, select 'No error'.
And thereupon he sudden remembered / that he was not sleeping in his wife's room, but in his study, / and the smile vanished from his face.
1
and the smile vanished from his face.
2
And thereupon he sudden remembered
3
that he was not sleeping in his wife's room, but in his study,
4
No error