What is the minimum number of rounds for Team and Two-Headed Giant events?
a) "How many rounds are required for Team and Two-Headed Giant events at minimum?"
b) "What is the least number of rounds needed for Team and Two-Headed Giant competitions?"
c) "What is the minimum number of matches for Team and Two-Headed Giant events?"
d) "How many rounds must be played in Team and Two-Headed Giant tournaments at a minimum?"