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

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'