hi. can you tell me how many players are from OU College?
select count ( * ) from tryout as t1 join player as t2 on t1.pid = t2.pid where t1.cname = "OU"
and can you tell me if OU is the college with the largest size?
select cname from college order by enr desc limit 1
and what is the name of that tryout player from OU?
select t2.pname from tryout as t1 join player as t2 on t1.pid = t2.pid where t1.cname = "OU"