Q1: you did not draw the predicted HR image correctly, hence 35 pts.
Q2: the first two drawing in (c) is not correct. for scanning
technique, you wrote the same thing for c and d. 70 pts.
Q3a: point resolution is defined under optimal defocus (20 out of 30 pts)
total=35+70+20+5+10+5+5+2+(50-10)=192