CREATE TABLE table_203_187 (id DECIMAL, "conference" TEXT, "bids" DECIMAL, "record" TEXT, "win %" DECIMAL, "quarterfinals" DECIMAL, "semifinals" DECIMAL, "final" DECIMAL, "champions" DECIMAL)

how many quarterfinals were won by the atlantic coast conference ?
SELECT "quarterfinals" FROM table_203_187 WHERE "conference" = 'atlantic coast conference'
SELECT "quarterfinals" FROM "table_203_187" WHERE "conference" = 'atlantic coast conference'