CREATE TABLE table_name_75 (clock_speed__mhz_ NUMBER, introduced VARCHAR2)

What is the least clock speed (MHz) with January 1986 as introduced?
SELECT MIN(clock_speed__mhz_) FROM table_name_75 WHERE introduced = "january 1986"
SELECT MIN("clock_speed__mhz_") FROM "table_name_75" WHERE "introduced" = "january 1986"