I thinks is A or B if not I’m sorry
N = ((n-1) + 4) + 4, to my understanding.
although your answers seem right written in the columns, but your method of applying numbers to equation seems incorrect in 'expand' column. for example, answer for 3 should be something like this...
3 21 17+4
4 25 21+4
hope it helps.
I believe the answer is A.
The length of the Lettuce is 16 and the width is 24
The length of the Carrots is 24 and the width is 24
The length of the Radishes is 22 and the width is 14
The length of the Celery is 22 and the width is 10