I would agree that he is responsible to sell all that he can find. I doubt seriously that there is any LSA that can display all their inventory unless they've been out for a week and were never re-supplied. I just wonder what it cost to hold an investigation for a $1.75 cup of noodles? People do make mistakes and overlooking one cup of noodles in the mountain of inventory is not hard to do. According to the LSA the noodles were underneath some boxes in his storage area~ not in plain sight for sale.
And frankly I'd much rather see the LSA attending to customers and actually selling them the food that can be easily seen, rather than spending 5 minutes rumaging through boxes and compartments trying to find a cup of noodles to sell at $1.75.