Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE student (stuid VARCHAR, major VARCHAR)
TABLE: CREATE TABLE member_of_club (clubid VARCHAR, stuid VARCHAR)
TABLE: CREATE TABLE club (clubname VARCHAR, clubid VARCHAR)

### Question ###
Which club has the most members majoring in "600"?

### Accurate SQL ###

SELECT t1.clubname FROM club AS t1 JOIN member_of_club AS t2 ON t1.clubid = t2.clubid JOIN student AS t3 ON t2.stuid = t3.stuid WHERE t3.major = "600" GROUP BY t1.clubname ORDER BY COUNT(*) DESC LIMIT 1