A business raises its output level from zero. What effect will this have on its short-run marginal cost (MC), average total cost (ATC) and average fixed cost (AFC)?
- AMC: fall then rise; ATC: fall then rise; AFC: fall
- BMC: fall then rise; ATC: rise then fall; AFC: rise
- CMC: rise then fall; ATC: fall then rise; AFC: fall
- DMC: rise then fall; ATC: rise then fall; AFC: rise