In my time

100-90 = A+
89-80 = A
79-70 = B
69-60 = C
59-50 = D
49-40 = E
39-0 = F (Failed)

That time, getting D is malu already
C is considered normal.

And my time was during Mahathir education reformation
The standard considered dropped already compared to British time

I can't imagine the standard now