x2.
In my more than six years at NUS, I've never had an assignment
which was 'soft copy only'. It was either 'hard copy
only' or 'both hard and soft copies'.
Simply put, it's a lot easier to grade a hard copy than a soft
copy. Those lecturers who demand a soft copy on top of the hard
copy would do so to check for plagiarism.
I've had "soft copy" only before.
And then he printed the assignments and gave them back to
us.