CREATE TABLE table_3963 ("Operator" TEXT, "Number purchased" FLOAT, "Variant" TEXT, "Bodybuilder" TEXT, "Year ( s )  purchased" TEXT)

What is the variant when Alexander was the bodybuilder?
SELECT "Variant" FROM table_3963 WHERE "Bodybuilder" = 'Alexander'
SELECT "Variant" FROM "table_3963" WHERE "Bodybuilder" = 'Alexander'