CREATE TABLE table_18938 ("Club" TEXT, "Played" TEXT, "Won" TEXT, "Drawn" TEXT, "Lost" TEXT, "Points for" TEXT, "Points against" TEXT, "Tries for" TEXT, "Tries against" TEXT, "Try bonus" TEXT, "Losing bonus" TEXT, "Points" TEXT)

What is the try bonus for when tries against is 43?
SELECT "Try bonus" FROM table_18938 WHERE "Tries against" = '43'
SELECT "Try bonus" FROM "table_18938" WHERE "Tries against" = '43'