CREATE TABLE table_name_7 (year_10_6th_quad VARCHAR(255), open_2nd_viii VARCHAR(255), year_11_2nd_viii VARCHAR(255))
What is the Year 10 6th Quads for the Open 2nd VIII of ACGS and a Year 11 2nd VIII NC?
    
SQL: SELECT year_10_6th_quad FROM table_name_7 WHERE open_2nd_viii = "acgs" AND year_11_2nd_viii = "nc"