This first example got 9/15 for 4A and 10/15 for 4B
4 a 9, 4b 10 from Naamah Hill
This one got 10/15 for 4A and 8/15 for 4B 4 a 10, 4b 8 from Naamah Hill
This one got 12/15 fro 4A and 11/15 for 4B 4 a 12 4b 11 from Naamah Hill
This last example received full marks for both questions!