CREATE TABLE table_57762 ("Name" TEXT, "Pennant" TEXT, "Builder" TEXT, "Laid Down" TEXT, "Launched" TEXT, "Commissioned" TEXT)

What is the building for the r90 pennant?
SELECT "Builder" FROM table_57762 WHERE "Pennant" = 'r90'
SELECT "Builder" FROM "table_57762" WHERE "Pennant" = 'r90'