Okay so the answer is D. I am going to try and explain it in the best way I can. TFE is definitely hard they take a ton of practice. The way I looked at it is you can't see the diagonals because they are below a solid line so if you were to draw a line straight up from the diagonals in the front view they would be dotted because they are underneath a solid line. So from that I was able to eliminate A and C. I then looked at the end view and if you draw the event line up from the little box you run into a solid line. Solid lines always win against dotted lines. So I was able to see that the middle box would be seen in the top view. Going back to the front view if you look at the middle sized box in the middle it is directly on top of the solid line. So imagine looking at the top of the figure you would be able to see the depression of the middle box so that is why the middle box is seen at the top. Not sure if I did a good job explaining it and I'm not sure if I'm technically correct on how I looked at it but thats how I got it was D.