heads-up tournament rules

[jmariuz]

Can anyone explain the blinds in heads-up tournament play. When heads-up starts is the button with the small or big blind and also, after the small blind acts, does the big blind act first after the flop?

Thanks

[BluffVin]

A. The Small Blind is the button
B. The Small Blind acts first pre-flop
C. Postflop, the BB acts first.