CREATE TABLE table_34758 ("Rank" FLOAT, "Centre" TEXT, "Country" TEXT, "Rating" FLOAT, "Change" FLOAT)

Which Change is the average one that has a Centre of buenos aires, and a Rank smaller than 46?
SELECT AVG("Change") FROM table_34758 WHERE "Centre" = 'buenos aires' AND "Rank" < '46'
SELECT AVG("Change") FROM "table_34758" WHERE "Centre" = 'buenos aires' AND "Rank" < '46'