LIMIT on table with 1 to many
Like:
SELECT Al.id AS Aid,
       Al.name,
       C.id AS Cid,
       C.item
FROM
  (SELECT A.id,
          A.name
   FROM A
   WHERE A.owner = 1
   ORDER BY A.id DESC
   LIMIT 3) AS Al
INNER JOIN B b ON Al.id = B.Aid
INNER JOIN C c ON B.Cid = C.id

fiddle