CREATE TABLE table_3965 ("Operator" TEXT, "Number purchased" FLOAT, "Variant" TEXT, "Bodybuilder" TEXT, "Year ( s )  purchased" TEXT)

How many different variants are there for Northern Counties bodybuilder?
SELECT COUNT("Variant") FROM table_3965 WHERE "Bodybuilder" = 'Northern Counties'
SELECT COUNT("Variant") FROM "table_3965" WHERE "Bodybuilder" = 'Northern Counties'